Lab 5 Torque and Angular Acceleration

... Physical principles: Newton’s law of motion for rotation asserts that the net torque acting on an object equals the product of its moment of inertia and its angular acceleration. ...

... Physical principles: Newton’s law of motion for rotation asserts that the net torque acting on an object equals the product of its moment of inertia and its angular acceleration. ...

Model Four

... For example, a yo-yo is an object that typically moves in a plane perpendicular to its rotation axis. Thus, we can study the motion of most yo-yos. The motion of a wheel is typically in a plane perpendicular to its rotation axis. Thus, we can study the motion of most wheels. The motion of the earth ...

... For example, a yo-yo is an object that typically moves in a plane perpendicular to its rotation axis. Thus, we can study the motion of most yo-yos. The motion of a wheel is typically in a plane perpendicular to its rotation axis. Thus, we can study the motion of most wheels. The motion of the earth ...

Revision of Mechanics Basics

... rotating at a speed ωLSS and we want to find its equivalent inertia at the HSS. We have a gearing ratio of rg between the two shafts. Then the kinetic energy must be the same whether the flywheel is fitted on the HSS or the LSS. So: ...

... rotating at a speed ωLSS and we want to find its equivalent inertia at the HSS. We have a gearing ratio of rg between the two shafts. Then the kinetic energy must be the same whether the flywheel is fitted on the HSS or the LSS. So: ...

MECHANICAL PRINCIPLES OUTCOME 4

... A pulley is two sets of wheels as shown. The rope starts from the axle of one set and goes around the pulleys wheels before coming off to the point where the effort is applied. Each rope between the two sets of wheels gets shorter by the same amount so if there are N ropes, the distance moved by the ...

... A pulley is two sets of wheels as shown. The rope starts from the axle of one set and goes around the pulleys wheels before coming off to the point where the effort is applied. Each rope between the two sets of wheels gets shorter by the same amount so if there are N ropes, the distance moved by the ...

14.3 Mechanical Advantage - mrsjanssensclasses

... 1. The input force is located between the fulcrum and the output force. 2. The output distance over which it exerts the force is larger than the input distance. 3. The mechanical advantage is always less than 1. ...

... 1. The input force is located between the fulcrum and the output force. 2. The output distance over which it exerts the force is larger than the input distance. 3. The mechanical advantage is always less than 1. ...

Document

... If mg = 400 N, T comes out to about 1700 N! The components of the support force F can be found from our force equations. F is also about 1700 N. ...

... If mg = 400 N, T comes out to about 1700 N! The components of the support force F can be found from our force equations. F is also about 1700 N. ...

Pulleys - Mrs. Thomas Room 218

... 4. Is the mechanical advantage and the ideal mechanical advantage always the same? If not, why do you think that is? 5. Do you notice a relationship between the ideal mechanical advantage and the number of pulleys in each of the parts of the lab? If so, what is it? 6. Is there a relationship between ...

... 4. Is the mechanical advantage and the ideal mechanical advantage always the same? If not, why do you think that is? 5. Do you notice a relationship between the ideal mechanical advantage and the number of pulleys in each of the parts of the lab? If so, what is it? 6. Is there a relationship between ...

Chapter 8

... • Remember back to Newton’s 1st Law of Motion, Objects tend to stay in motion, or at rest, unless acted upon by a net force. • Notice it says Motion, but does not specify whether the motion is linear or rotational. • We also said that Newton’s 1st Law describes the term inertia, or the the resistanc ...

... • Remember back to Newton’s 1st Law of Motion, Objects tend to stay in motion, or at rest, unless acted upon by a net force. • Notice it says Motion, but does not specify whether the motion is linear or rotational. • We also said that Newton’s 1st Law describes the term inertia, or the the resistanc ...

Solutions to Homework Set 9

... 1) The figure below shows four different cases involving a uniform rod of length L and mass M is subjected to two forces of equal magnitude. The rod is free to rotate about an axis that either passes through one end of the rod, as in (a) and (b), or passes through the middle of the rod, as in (c) an ...

... 1) The figure below shows four different cases involving a uniform rod of length L and mass M is subjected to two forces of equal magnitude. The rod is free to rotate about an axis that either passes through one end of the rod, as in (a) and (b), or passes through the middle of the rod, as in (c) an ...

Notes in pdf format

... When designing the system you will utilize to raise and lower a TV, etc., think about the load you plan to lift. 1. How heavy is it? 2. Can pulley positions be placed to take advantage of leverage? Particularly important to remember is that both sides of your platform MUST be raised with identical p ...

... When designing the system you will utilize to raise and lower a TV, etc., think about the load you plan to lift. 1. How heavy is it? 2. Can pulley positions be placed to take advantage of leverage? Particularly important to remember is that both sides of your platform MUST be raised with identical p ...

Mechanisms Levers Class 1 levers:

... A pinion is a round cog and the rack is a flat bar with teeth. The driver cog either moves along the rack, as in a rack and pinion (funicular) railway - or else the driver cog moves the rack, as in the steering system in cars. Rack and pinion changes rotary motion into linear motion - as shown in th ...

... A pinion is a round cog and the rack is a flat bar with teeth. The driver cog either moves along the rack, as in a rack and pinion (funicular) railway - or else the driver cog moves the rack, as in the steering system in cars. Rack and pinion changes rotary motion into linear motion - as shown in th ...

Atwood`s Machine

... Objective 1: Constant Total Mass 1. Add 10g to one mass hanger and 80g to the other, for a total of 15g and 85g, respectively. 2. Record the total masses for each in Table 1 for Run 1, where M 2 is the heavier mass at 85g. 3. Ensure that the height of the pulley allows M2 to rest on the landing pad ...

... Objective 1: Constant Total Mass 1. Add 10g to one mass hanger and 80g to the other, for a total of 15g and 85g, respectively. 2. Record the total masses for each in Table 1 for Run 1, where M 2 is the heavier mass at 85g. 3. Ensure that the height of the pulley allows M2 to rest on the landing pad ...

Massive Pulleys Review

... Newton’s 2nd law is always true (for inertial reference frames) Conservation of energy still applies. ...

... Newton’s 2nd law is always true (for inertial reference frames) Conservation of energy still applies. ...

PHYSICS 111 HOMEWORK SOLUTION #10 April 8, 2013

... In the figure below, the hanging object has a mass of m1 = 0.415 kg; the sliding block has a mass of m2 = 0.890 kg; and the pulley is a hollow cylinder with a mass of M = 0.350 kg, an inner radius of R1 = 0.020 0 m, and an outer radius of R2 = 0.030 0 m. Assume the mass of the spokes is negligible. ...

... In the figure below, the hanging object has a mass of m1 = 0.415 kg; the sliding block has a mass of m2 = 0.890 kg; and the pulley is a hollow cylinder with a mass of M = 0.350 kg, an inner radius of R1 = 0.020 0 m, and an outer radius of R2 = 0.030 0 m. Assume the mass of the spokes is negligible. ...

MASSACHUSETTS INSTITUTE OF TECHNOLOGY

... Consider the arrangement of pulleys and blocks shown in the figure. The pulleys are assumed massless and frictionless and the connecting strings are massless and unstretchable. Denote the respective masses of the blocks as m1 , m2 and m3 . The upper pulley in the figure is free to rotate but its cen ...

... Consider the arrangement of pulleys and blocks shown in the figure. The pulleys are assumed massless and frictionless and the connecting strings are massless and unstretchable. Denote the respective masses of the blocks as m1 , m2 and m3 . The upper pulley in the figure is free to rotate but its cen ...

EXPERIMENT 11: Pulleys

... Pulleys are simple machines that can be used to change the direction of a force, to reduce the force needed to move a load through a distance, or to increase the speed at which the load is moving, but that do not decrease the amount of work done. However, if the required effort force is reduced, the ...

... Pulleys are simple machines that can be used to change the direction of a force, to reduce the force needed to move a load through a distance, or to increase the speed at which the load is moving, but that do not decrease the amount of work done. However, if the required effort force is reduced, the ...

Newton`s Second Law for Rotation Newton`s First Law for Rotation

... The net torque is the vector sum of all the torques acting on an object. The tendency of an object to maintain its state of motion is known as inertia. For straight-line motion mass is the measure of inertia, but mass by itself is not enough to define rotational inertia. ...

... The net torque is the vector sum of all the torques acting on an object. The tendency of an object to maintain its state of motion is known as inertia. For straight-line motion mass is the measure of inertia, but mass by itself is not enough to define rotational inertia. ...

Set #6 - McMaster Physics and Astronomy

... 2.What is the moment of inertia about a diagonal axis that passes through masses B and D. Answer: 2.46e-03 kg*m^2 ...

... 2.What is the moment of inertia about a diagonal axis that passes through masses B and D. Answer: 2.46e-03 kg*m^2 ...

Physics I - Rose

... Solve: Torque by a force is defined as Frsin where is measured counterclockwise from the r vector to the F vector. The net torque on the pulley about the axle is the torque due to the 30 N force plus the torque due to the 20 N force: ...

... Solve: Torque by a force is defined as Frsin where is measured counterclockwise from the r vector to the F vector. The net torque on the pulley about the axle is the torque due to the 30 N force plus the torque due to the 20 N force: ...

Atwood Machine (AM)

... uncertainty, should the y-intercept of the plot be positive, negative, or zero? [1 pt] a. positive b. negative c. 0 (zero) 8. If there is no friction in the pulley system, what is the net force, Fnet, equal to? [1 pt] a. f b. (m1 + m2)g c. (m1 – m2)g d. None of these choices. 9. According to Newton’ ...

... uncertainty, should the y-intercept of the plot be positive, negative, or zero? [1 pt] a. positive b. negative c. 0 (zero) 8. If there is no friction in the pulley system, what is the net force, Fnet, equal to? [1 pt] a. f b. (m1 + m2)g c. (m1 – m2)g d. None of these choices. 9. According to Newton’ ...

TUTORIAL 4 WORK, ENERGY AND POWER An escalator is used to

... 8. A spring is extended by 5 cm when it is stretched by an external force of 1 N. If the spring is extended by 10 cm, what is the elastic potential energy stored in the spring? 9. A 1.5 x 103 kg car needs to pass a slow moving lorry. The velocity of a car changes from 15.2 m s-1 to 19.5 m s-1 in 3.5 ...

... 8. A spring is extended by 5 cm when it is stretched by an external force of 1 N. If the spring is extended by 10 cm, what is the elastic potential energy stored in the spring? 9. A 1.5 x 103 kg car needs to pass a slow moving lorry. The velocity of a car changes from 15.2 m s-1 to 19.5 m s-1 in 3.5 ...

A moving object has a tendency to keep moving, this is momentum

... must be conserved in this situation, so the star's rotation speed must increase. Some neutron stars rotate in seconds. ...

... must be conserved in this situation, so the star's rotation speed must increase. Some neutron stars rotate in seconds. ...

# Continuously variable transmission

A continuously variable transmission (CVT), (also known as single-speed transmission, gearless transmission, stepless transmission, variable pulley transmission, or in case of motorcycles, a twist-and-go) is an automatic transmission that can change seamlessly through an infinite number of effective gear ratios between maximum and minimum values. This contrasts with other mechanical transmissions that offer a fixed number of gear ratios. The flexibility of a CVT allows the input shaft to maintain a constant angular velocity.A belt-driven design offers approximately 88% efficiency, which, while lower than that of a manual transmission, can be offset by lower production cost and by enabling the engine to run at its most efficient revolutions per minute (RPM) for a range of vehicle speeds. Thus a small car can strike a balance between fuel efficiency and cost of manufacture.When power is more important than economy, the ratio of the CVT can be changed to allow the engine to turn at the RPM at which it produces greatest power. This is typically higher than the RPM that achieves peak efficiency. Finally, a CVT does not strictly require the presence of a clutch. Nevertheless, in some vehicles (e.g. motorcycles), a centrifugal clutch is added to facilitate a ""neutral"" stance, which is useful when idling or manually reversing into a parking space.