20) A wheel mounted on an axis that is not frictionless is initially at rest. If...
20) A wheel mounted on an axis that is not frictionless is initially at rest. If a net torque of 40.0 N.m is applied to the wheel for 20.0s, the wheel rotates at an angular velocity of 400 rev/min. (a) (5 pts) What is the moment of inertia of the wheel? (b) (3 pts) What is the magnitute of angular momentum of the wheel at the angular velocity of 400 rev/min? (c) (5 pts) The external torque is then removed,...
A grinding wheel is initially at rest. A constant external torque of 50N*n is applied to the wheel for 20 s, giving the wheel an angular speed of 600 rev/min. The external torque is then removed, and the wheel comes to rest 120 s later. a) Find the amount of inertia of the wheel b)Find the frictional torque, which is assumed to be constant
How to solve? experimental bicycle wheel is placed on a test stand so that it is free to turn on its axle. If a constant net torque of is applied to the tire for 2.00 s, the angular speed of the tire increases from 0 to 100 rev/min. The wheel is brought to rest by friction in its bearings in 125 s. Assume the 2. A 5.00 N-m external torque is then removed, and the the wheel is rotating is...
A student sitting on a stool that is free to rotate (frictionless), but is initially at rest, holds a bicycle wheel. The wheel has a rotational velocity of 10 rev/s about a vertical axis counter clockwise (vector of angular momentum points up). The rotational inertia of the wheel is 4 kg*m2 about its center and the rotational inertia of the student and wheel and platform about the rotational axis of the platform is 12 kg*m2. If the student flips the axis of...
A torque of 35.9 N · m is applied to an initially motionless wheel which rotates around a fixed axis. This torque is the result of a directed force combined with a friction force. As a result of the applied torque the angular speed of the wheel increases from 0 to 10.3 rad/s. After 6.20 s the directed force is removed, and the wheel comes to rest 60.2 s later. (a) What is the wheel's moment of inertia (in kg...
A torque of 35.9 N · m is applied to an initially motionless wheel which rotates around a fixed axis. This torque is the result of a directed force combined with a friction force. As a result of the applied torque the angular speed of the wheel increases from 0 to 9.7 rad/s. After 6.10 s the directed force is removed, and the wheel comes to rest 60.2 s later. (a) What is the wheel's moment of inertia (in kg...
A wheel (radius = 0.30 m) is mounted on a frictionless, horizontal axis. A light cord wrapped around the wheel supports a 0.50-kg object. When released from rest the object falls with a downward acceleration of 5.0 m/sec. 111 TL LLLL 17. Find the tension on the cord. 18. Find the angular acceleration of the wheel. 19. Find the moment of inertia of the wheel. mg
A person sits on a frictionless stool that is free to rotate but is initially at rest. The person is holding a bicycle wheel (I = 3 kg*m2) that is rotating at 8 rev/s in the clockwise direction as viewed from above, and the moment of inertia of the person-wheel-stool system is 9 kg*m2. For this problem, all answers involving a rotational component will be expressed in revolutions rather than radians. 1. What is direction of the angular momentum of...
A wheel rotates without friction about a stationary horizontal axis at the center of the wheel. A constant tangential force equal to 88.0 N is applied to the rim of the wheel. The wheel has radius 0.110 m . Starting from rest, the wheel has an angular speed of 13.9 rev/s after 3.28 s . What is the moment of inertia of the wheel? Express your answer with the appropriate units.
A wheel of moment of inertia of 3.00 kg.m2 starts from rest and accelerates under a constant torque of 3.00 N.m for 4.00 s. The wheel's rotational kinetic energy at the end of 4.00 s is = A wheel starts at rest, and has an angular acceleration of 4 rad/s2. After 4.0 s it will have an angular velocity of ? rad/s A wheel starts at rest, and has an angular acceleration of 3.5 rad/s2. After 2.0 s it will have...