Question

A potter's wheel is a disk that has a mass of 5.0 kg and a radius...

A potter's wheel is a disk that has a mass of 5.0 kg and a radius of 0.5 m. When turned on, a motor spins up the wheel with a constant torque of 7.0 N·m for 10.0 seconds. Note: the moment of inertia of a solid disk is given by 1/2 MR2. Also, there is no translational motion, the wheel simply spins in place.

a. [8 pts.] Find the wheel's angular acceleration in radians/sec2 during these 10 s.

b. [8 pts.] Find its kinetic energy after reaching its final angular velocity.

Science   Physics   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
A potter's wheel (a solid, uniform disk) of mass 7.1 kg and radius 0.78 m spins...
A potter's wheel (a solid, uniform disk) of mass 7.1 kg and radius 0.78 m spins about its central axis. A 0.51 kg lump of clay is dropped onto the wheel at a distance 0.65 m from the axis. Calculate the rotational inertia of the system (in kg*m^2).
A bicycle wheel has a mass of 2.0 kg and a radius of 60 cm. With...
A bicycle wheel has a mass of 2.0 kg and a radius of 60 cm. With the wheel initially at rest, a torque of 0.36 N-m is then applied. What is the angular speed of the tire after 5 seconds? The moment of inertia of a wheel is mR2. A. 0.5 rad/s B. 1.0 rad/s C. 1.5 rad/s D. 2.5 rad/s E. 5.0 rad/s
A 35 cm -diameter potter's wheel with a mass of 15 kg is spinning at 180...
A 35 cm -diameter potter's wheel with a mass of 15 kg is spinning at 180 rpm. Using her hands, a potter forms a 14 cm-diameter pot that is centered on and attached to the wheel. The pot's mass is negligible compared to that of the wheel. As the pot spins, the potter's hands apply a net frictional force of 1.3 N to the edge of the pot. If the power goes out, so that the wheel's motor no longer...
A uniform disk has a mass of 9 kg and a radius of 20 cm. It...
A uniform disk has a mass of 9 kg and a radius of 20 cm. It completes 15 revolutions in 11 seconds when starting from rest. (12 points) a. Find the angular acceleration of the disk. b. Find the moment of inertia of the disk. c. Find the net torque on the disk.
A wheel free to rotate about its axis that is not frictionless is initially at rest....
A wheel free to rotate about its axis that is not frictionless is initially at rest. A constant external torque of +52 N·m is applied to the wheel for 23 s, giving the wheel an angular velocity of +640 rev/min. The external torque is then removed, and the wheel comes to rest 120 s later. (Include the sign in your answers.) (a) Find the moment of inertia of the wheel.   kg·m2 (b) Find the frictional torque, which is assumed to...
A potter's wheel, that has a radius R=15 cm and weighs 70 kg, is used to...
A potter's wheel, that has a radius R=15 cm and weighs 70 kg, is used to mold pottery clay. A 5 kg solid ball of clay, with a radius of r ball=6 cm, is placed in the center of the wheel and both get spun up to 50 rad/s. If you are able to form the clay into a solid disk with a radius of r disk=10 cm without applying any net torque on the wheel (you press from above...
A uniform grindstone wheel, in the shape of a solid disk, has mass 9.00kg and radius...
A uniform grindstone wheel, in the shape of a solid disk, has mass 9.00kg and radius 10.0cm. a) Calculate the rotational kinetic energy of the grindstone as it turns at 30.0revs/second. Immediately after the motor for the grindstone is turned off, a knife blade is pressed against the outer edge of the grindstone. The knife blade is pressed perpendicular to the grindstone with a force of 10.0N. The coefficient of friction between the blade and stone is 0.800. b) Determine...
A wheel free to rotate about its axis that is not frictionless is initially at rest....
A wheel free to rotate about its axis that is not frictionless is initially at rest. A constant external torque of +58 N·m is applied to the wheel for 16 s, giving the wheel an angular velocity of +575 rev/min. The external torque is then removed, and the wheel comes to rest 120 s later. (Include the sign in your answers.) 1) Find the moment of inertia of the wheel. 2) Find the frictional torque, which is assumed to be...
Part A) A potter's wheel—a thick stone disk of radius 0.400 m and mass 138 kg—is...
Part A) A potter's wheel—a thick stone disk of radius 0.400 m and mass 138 kg—is freely rotating at 60.0 rev/min. The potter can stop the wheel in 5.00 s by pressing a wet rag against the rim and exerting a radially inward force of 58.9N. Find the effective coefficient of kinetic friction between the wheel and rag. Part B) The net work done in accelerating a solid cylindrical wheel from rest to an angular speed of 50rev/ min is...
A wheel stars at rest, has a radius of 0.1m and has a moment of inertia...
A wheel stars at rest, has a radius of 0.1m and has a moment of inertia I=10kg*m^2. A constant torque of 3 N*m is applied to the wheel to cause counter-clockwise angular acceleration 1) what will the angular velocity of the wheel be when the angular displacement is 20*pi radians? 2) what will the tangentail speed of a point on the outer edge of the wheel be when the angular velocirt of the wheel is your answer to part 2?...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT