Question

A wheel on a shaft is initially at rest, when a motor starts to supply constant...

A wheel on a shaft is initially at rest, when a motor starts to supply constant torque. The wheel has rotational inertia I=19.4 kg m2 about the shaft. If the motor needs to supply torque so that the wheel will make exactly 3 full revolutions in time t=3.0 seconds (starting from rest), how much torque must the motor supply?

Homework Answers

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
A motor drives a disk initially at rest through 23.9 rotations in 5.0 s. Assume the...
A motor drives a disk initially at rest through 23.9 rotations in 5.0 s. Assume the vector sum of the torques caused by the force exerted by the motor and the force of friction is constant. The rotational inertia of the disk is 4.0 kg⋅m2. When the motor is switched off, the disk comes to rest in 12 s. A.)What is the magnitude of torque created by the force of friction? B.)What is the magnitude of torque caused by the...
(b) An electric unicycle is composed of a single wheel and an electric motor. The manufacturer...
(b) An electric unicycle is composed of a single wheel and an electric motor. The manufacturer specifications state that it must accelerate from 0 to 10 mph in 3.8 seconds, for a given torque T. The wheel would rotate with 1000 rpm if it is travelling at 10 mph. According to the motor’s manufacturer, the same electric motor with the same torque T would accelerate from rest to 1000 rpm in 0.95 seconds, assuming the damping and losses to be...
A 29.5-kg wheel with radius 40.6 cm and rotational inertia 3.58 kg⋅m2 starts from rest and...
A 29.5-kg wheel with radius 40.6 cm and rotational inertia 3.58 kg⋅m2 starts from rest and rolls down a 24.0-m-high incline. Find its speed at the bottom. Is the wheel uniformly solid, or is its mass concentrated at the rim, or is its structure somewhere in between?
The combination of an applied force and a frictional force produces a constant torque of 40...
The combination of an applied force and a frictional force produces a constant torque of 40 N·m on a wheel rotating about a fixed axis. The applied force acts for 8.0 seconds, during which time the angular speed of the wheel increases from 0 to 700 degrees/second. The applied force is then removed, and the wheel comes to rest in 55 s. Answer the following questions. (a)What is the magnitude of the angular acceleration of the wheel while the applied...
A torque of 35.0 N · m is applied to an initially motionless wheel which rotates...
A torque of 35.0 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 10.5 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 with radius 0.0600 m rotates about a horizontal frictionless axle at its center. The...
A wheel with radius 0.0600 m rotates about a horizontal frictionless axle at its center. The moment of inertia of the wheel about the axle is 2.50 kg⋅m2. The wheel is initially at rest. Then at t=0 a force F(t)=(5.50N/s)t is applied tangentially to the wheel and the wheel starts to rotate. What is the magnitude of the force at the instant when the wheel has turned through 8.00 revolutions?
A car's wheel has a rotational inertia of 3.1 kg m2. Working in a coordinate system...
A car's wheel has a rotational inertia of 3.1 kg m2. Working in a coordinate system where counterclockwise is positive, answer the following questions. Treat parts a, b, and c as stand-alone questions; the response from one is not needed for the following parts. a) If the wheel is spinning with an angular velocity of 6 rad/s counterclockwise and then a torque of 15 N m is applied over a time interval of 4 s, What is the wheel's final...
A car's wheel has a rotational inertia of 2.8 kg m2. Working in a coordinate system...
A car's wheel has a rotational inertia of 2.8 kg m2. Working in a coordinate system where counterclockwise is positive, answer the following questions. Treat parts a, b, and c as stand-alone questions; the response from one is not needed for the following parts. a) If the wheel is spinning with an angular velocity of 6 rad/s counterclockwise and then a torque of 15 N m is applied over a time interval of 4 s, What is the wheel's final...
A turntable with a moment of inertia of 5.4 × 10−3 kg. m2 reaches a constant...
A turntable with a moment of inertia of 5.4 × 10−3 kg. m2 reaches a constant rotational speed of 45 rpm from rest in 6.30 seconds. a. Find the number of revolutions the turntable made during this time. b. Determine the rotational work done by the applied torque for increasing the angular speed from zero to 45 rpm. c. While rotating at a constant rotational speed of 45 rpm, a mouse of 32-g was kept 15 cm from the center....
1) The combination of an applied force and a friction force produces a constant total torque...
1) The combination of an applied force and a friction force produces a constant total torque of 35.8 N · m on a wheel rotating about a fixed axis. The applied force acts for 5.90 s. During this time, the angular speed of the wheel increases from 0 to 10.1 rad/s. The applied force is then removed, and the wheel comes to rest in 60.1 s. (a) Find the moment of inertia of the wheel.   kg · m2 (b) Find...