5 ICP-A 1. A 65-kg merry-go-round worker stands on the ride`s
... c) If the mass of the earth is 5.97 × 1024 kilograms, find the magnitude of the gravitational force keeping the earth going in the circle. ...
... c) If the mass of the earth is 5.97 × 1024 kilograms, find the magnitude of the gravitational force keeping the earth going in the circle. ...
Chapter_10
... d) At the final speed, with what force does the fly (m = 0.01 kg, r = 0.50 m) need to hold on, so that it won’t fall off? (Note difference between angular and centripetal acceleration). ...
... d) At the final speed, with what force does the fly (m = 0.01 kg, r = 0.50 m) need to hold on, so that it won’t fall off? (Note difference between angular and centripetal acceleration). ...
PHYSICS 100A Second Exam
... c) What is the force (magnitude and direction) exerted by the axis on the seesaw? (6 pts) Also, for equilibrium, the net force must equal zero. That is, N − 10 g − 20 g − 30 g = 0 N = 60 g The force exerted by the axis on the seesaw is 60g N in the upward direction. ...
... c) What is the force (magnitude and direction) exerted by the axis on the seesaw? (6 pts) Also, for equilibrium, the net force must equal zero. That is, N − 10 g − 20 g − 30 g = 0 N = 60 g The force exerted by the axis on the seesaw is 60g N in the upward direction. ...
Chapter 6 1. A motor rotates at 3600 RPM. Convert this number into
... 6. The transmission on a car is designed to change the RPM and torque of an engine to the proper levels at the wheels to drive the car effectively. If the engine has 130ftLb of torque and the torque at the wheels is 260 ftLb, how many times bigger is the driven wheel compared to the driving wheel? ...
... 6. The transmission on a car is designed to change the RPM and torque of an engine to the proper levels at the wheels to drive the car effectively. If the engine has 130ftLb of torque and the torque at the wheels is 260 ftLb, how many times bigger is the driven wheel compared to the driving wheel? ...
Examples of Inertia
... If an object has a large amount of inertia (due to large mass) – It will be hard to slow down or speed it up if it moving. – It will be hard to make it start moving if it is at rest. – It will be hard to make it change ...
... If an object has a large amount of inertia (due to large mass) – It will be hard to slow down or speed it up if it moving. – It will be hard to make it start moving if it is at rest. – It will be hard to make it change ...
Notes - 2 - Torque at 90oKEY.jnt
... 2 – Torque at 90o A body in translational equilibrium will have no acceleration in the x or y directions. However it still could be _____________________. Consider a teeter-totter, with a 100 kg student on one end and a 50 kg student on the other. What are the net translational forces in: The x-dire ...
... 2 – Torque at 90o A body in translational equilibrium will have no acceleration in the x or y directions. However it still could be _____________________. Consider a teeter-totter, with a 100 kg student on one end and a 50 kg student on the other. What are the net translational forces in: The x-dire ...
Chapter 8 Name MULTIPLE CHOICE. Choose the one alternative
... 10) Two equal forces are applied to a door at the doorknob. The first force is applied perpendicular to the door; the second force is applied at 30° to the plane of the door. Which force exerts the greater torque? A) the first applied perpendicular to the door B) the second applied at an angle C) bo ...
... 10) Two equal forces are applied to a door at the doorknob. The first force is applied perpendicular to the door; the second force is applied at 30° to the plane of the door. Which force exerts the greater torque? A) the first applied perpendicular to the door B) the second applied at an angle C) bo ...
Ch 08-151
... 60. A 12.0-kg object is attached to a cord that is wrapped around a wheel of radius r = 10.0 cm (Fig. P8.60). The acceleration of the object down the frictionless incline is measured to be 2.00 m/s2. Assuming the axle of the wheel to be frictionless, determine (a) the tension in the rope, (b) the mo ...
... 60. A 12.0-kg object is attached to a cord that is wrapped around a wheel of radius r = 10.0 cm (Fig. P8.60). The acceleration of the object down the frictionless incline is measured to be 2.00 m/s2. Assuming the axle of the wheel to be frictionless, determine (a) the tension in the rope, (b) the mo ...
17AP_Physics_C_-_Rotational_Motion_II
... weight, mg, the mass of the pulley is mp, the radius is R, and the moment of inertia about its center of mass Icm = 1/2mpR2. (assuming the pulley is a uniform disk). Determine the acceleration of the hanging mass. Let’s first look at the F.B.D.s for both the pulley and hanging mass ...
... weight, mg, the mass of the pulley is mp, the radius is R, and the moment of inertia about its center of mass Icm = 1/2mpR2. (assuming the pulley is a uniform disk). Determine the acceleration of the hanging mass. Let’s first look at the F.B.D.s for both the pulley and hanging mass ...
Physics I - Rose
... (b) v R (0.0800 m)(33.9 rad/s) 2.71 m/s EVALUATE: An object released from rest and falling in free-fall for 0.750 m attains a speed of 2g (0.750 m) 3.83 m/s . The final speed of the hoop is less than this because some of its energy is in kinetic energy of rotation. Or, equivalently, the upw ...
... (b) v R (0.0800 m)(33.9 rad/s) 2.71 m/s EVALUATE: An object released from rest and falling in free-fall for 0.750 m attains a speed of 2g (0.750 m) 3.83 m/s . The final speed of the hoop is less than this because some of its energy is in kinetic energy of rotation. Or, equivalently, the upw ...
2nd Term Exam - UTA HEP WWW Home Page
... b) All points on the body are moving with the same angular velocity. c) All points on the body are moving with the same linear velocity. d) Its center of rotation is at rest, i.e., not moving. 24. Consider two uniform solid spheres where both have the same diameter, but one has twice the mass of the ...
... b) All points on the body are moving with the same angular velocity. c) All points on the body are moving with the same linear velocity. d) Its center of rotation is at rest, i.e., not moving. 24. Consider two uniform solid spheres where both have the same diameter, but one has twice the mass of the ...
Precession
Precession is a change in the orientation of the rotational axis of a rotating body. In an appropriate reference frame it can be defined as a change in the first Euler angle, whereas the third Euler angle defines the rotation itself. In other words, the axis of rotation of a precessing body itself rotates around another axis. A motion in which the second Euler angle changes is called nutation. In physics, there are two types of precession: torque-free and torque-induced.In astronomy, ""precession"" refers to any of several slow changes in an astronomical body's rotational or orbital parameters, and especially to Earth's precession of the equinoxes. (See section Astronomy below.)