Part23 - FacStaff Home Page for CBU
... Is there a minimum speed for going around a banked turn? Consider the case where the coefficient of friction is small and the angle of bank is large. In that case the car, if going too slow, will tend to slide down (to the right) so friction should act to the left. Can you get an equation for the Fc ...
... Is there a minimum speed for going around a banked turn? Consider the case where the coefficient of friction is small and the angle of bank is large. In that case the car, if going too slow, will tend to slide down (to the right) so friction should act to the left. Can you get an equation for the Fc ...
Newton`s 2nd Law
... To bring the lesson home, ask students to share other situations where the same concept applies. For example, when I used to take my kids sledding, I noticed that when we went down together on the same sled, we coasted a lot farther distance. Why is that? These seem to be opposed statements. Now, th ...
... To bring the lesson home, ask students to share other situations where the same concept applies. For example, when I used to take my kids sledding, I noticed that when we went down together on the same sled, we coasted a lot farther distance. Why is that? These seem to be opposed statements. Now, th ...
Chapter 11 Biology Study Guide
... mass times the acceleration due to gravity. d. mass times your speed. 14. The acceleration due to gravity on the surface of Mars is about one third the acceleration due to gravity on Earth’s surface. The weight of a space probe on the surface of Mars is a. greater than its weight on Earth’s surface. ...
... mass times the acceleration due to gravity. d. mass times your speed. 14. The acceleration due to gravity on the surface of Mars is about one third the acceleration due to gravity on Earth’s surface. The weight of a space probe on the surface of Mars is a. greater than its weight on Earth’s surface. ...
MASSACHUSETTS INSTITUTE OF TECHNOLOGY
... A bowling ball of mass m and radius R is initially thrown down an alley with an initial speed v0 and backspin with angular speed 0 , such that v0 R 0 . The moment of inertia of the ball about its center of mass is Icm (2 / 5)mR2 . Your goal is to determine the speed vf of the bowling ball wh ...
... A bowling ball of mass m and radius R is initially thrown down an alley with an initial speed v0 and backspin with angular speed 0 , such that v0 R 0 . The moment of inertia of the ball about its center of mass is Icm (2 / 5)mR2 . Your goal is to determine the speed vf of the bowling ball wh ...
Friction and Gravity Notes
... Air Resistance Objects falling through air experience a type of fluid friction called air resistance. -air resistance is an upward force exerted on falling objects. -Air resistance is not the same for all objects. -Falling objects with a greater surface area experience more air resistance. -That is ...
... Air Resistance Objects falling through air experience a type of fluid friction called air resistance. -air resistance is an upward force exerted on falling objects. -Air resistance is not the same for all objects. -Falling objects with a greater surface area experience more air resistance. -That is ...
Aug
... (4) Illustration of an Answer with clear sketches / diagrams carries weightage. 1. A motor boat of 4 tonne displacement changes its velocity from 11 knots due North to 18 knots due East in 30 seconds. Find the magnitude in m/s2 and direction of the average acceleration, and also the average accelera ...
... (4) Illustration of an Answer with clear sketches / diagrams carries weightage. 1. A motor boat of 4 tonne displacement changes its velocity from 11 knots due North to 18 knots due East in 30 seconds. Find the magnitude in m/s2 and direction of the average acceleration, and also the average accelera ...
Newton`s Second Law
... P2. When you drive your car forward, the friction force applied to the bottom of the tires is in which directions? P3. When you slide forward across the floor, in which direction is the friction? ...
... P2. When you drive your car forward, the friction force applied to the bottom of the tires is in which directions? P3. When you slide forward across the floor, in which direction is the friction? ...
Aspects of mechanics and thermodynamics in introductory physics
... of thermodynamics to justify the correct behaviour. There is a clear distinction between a purely mechanical integral of Newton’s second law on the one hand (the CM equation), and the first law of thermodynamics on the other. The CM equations for a system of particles give entirely correct numerical ...
... of thermodynamics to justify the correct behaviour. There is a clear distinction between a purely mechanical integral of Newton’s second law on the one hand (the CM equation), and the first law of thermodynamics on the other. The CM equations for a system of particles give entirely correct numerical ...
FRICTION
... Rolling Friction Rolling Friction = the friction force that acts on rolling objects. (100 to 1000 times less than sliding friction) ...
... Rolling Friction Rolling Friction = the friction force that acts on rolling objects. (100 to 1000 times less than sliding friction) ...
Physics Homework
... 5. A 65 kg swimmer jumps off a 10 m tall tower. a. Find the swimmer’s velocity on hitting the water ...
... 5. A 65 kg swimmer jumps off a 10 m tall tower. a. Find the swimmer’s velocity on hitting the water ...
How does friction, air resistance and gravity affect the motion of
... 1. What is released when friction exists between two objects move past each other? ...
... 1. What is released when friction exists between two objects move past each other? ...
Rolling resistance
Rolling resistance, sometimes called rolling friction or rolling drag, is the force resisting the motion when a body (such as a ball, tire, or wheel) rolls on a surface. It is mainly caused by non-elastic effects; that is, not all the energy needed for deformation (or movement) of the wheel, roadbed, etc. is recovered when the pressure is removed. Two forms of this are hysteresis losses (see below), and permanent (plastic) deformation of the object or the surface (e.g. soil). Another cause of rolling resistance lies in the slippage between the wheel and the surface, which dissipates energy. Note that only the last of these effects involves friction, therefore the name ""rolling friction"" is to an extent a misnomer.In analogy with sliding friction, rolling resistance is often expressed as a coefficient times the normal force. This coefficient of rolling resistance is generally much smaller than the coefficient of sliding friction.Any coasting wheeled vehicle will gradually slow down due to rolling resistance including that of the bearings, but a train car with steel wheels running on steel rails will roll farther than a bus of the same mass with rubber tires running on tarmac. Factors that contribute to rolling resistance are the (amount of) deformation of the wheels, the deformation of the roadbed surface, and movement below the surface. Additional contributing factors include wheel diameter, speed, load on wheel, surface adhesion, sliding, and relative micro-sliding between the surfaces of contact. The losses due to hysteresis also depend strongly on the material properties of the wheel or tire and the surface. For example, a rubber tire will have higher rolling resistance on a paved road than a steel railroad wheel on a steel rail. Also, sand on the ground will give more rolling resistance than concrete.