A fidget spinner experiences a constant torque of 1.4 N.m. If the spinner is initially at rest, what is its angular momentum 2.0 s later?
A fidget spinner experiences a constant torque of 1.4 N.m. If the spinner is initially at...
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
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 wheel experiences a constant angular acceleration due to a constant torque acting on it. The wheel begins at rest, and after turning through an angle of 50.0 radians, the rotational kinetic energy of the wheel is 40.0 J. What was the magnitude of the torque acting on the wheel?
An object initially at rest experiences an acceleration of 1.4 m/s2 for 8.0 s and then travels at that constant velocity for another 8.0 s . What is the object’s average velocity over the 16 s interval? show work
QUESTION 9 A model car initially at rest experiences a constant acceleration, reaching a speed of 8.50 m/s in a time of 4 s. What distance did the car move in this time, in units of meters? QUESTION 10 A satellite is moving around the Earth in a circular orbit with an angular speed of 4.7x10-4 rad/s. The angular speed is then increased at a constant angular acceleration to 5.3x104 rad/s. If this change in angular speed happened while the...
12.3 The measured shaft torque on the turbomachine shown in Figure is -60 N.m when the absolute velocities are as indicated. Determine the mass flowrate. What is the angular velocity if the magnitude of the shaft power is 1800 N.m/s? Is this machine a pump or a turbine? Explain. We were unable to transcribe this image
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...
An object whose moment of inertia is 2.5·kg·m2
experiences the torque shown in the figure. What is the object's
angular velocity at t = 2.4·s? Assume it starts from
rest.
7 (Nm)