Question

A person of mass 0.240 kg is at rest on the edge of a solid cylindrical...

A person of mass 0.240 kg is at rest on the edge of a solid cylindrical disk (? = 0.40 kg, ? = 0.60 m) rotating in a horizontal plane around the vertical axis through its center. The disk is rotating at 12.0 rad/s. The person moves to a point 0.3m from the center of the disk.

One) what is the moment of inertia of the disk including the person?

Two) what is the initial angular momentum of the disk and person system?

Three) what is the initial kinetic energy of the disk and person system?

Four) what is the moment of inertia of the system with the person at its new position ?

Five) What is the new angular velocity of the disk?

Six) What is the change in the kinetic energy of the system?

Seven) What is the cause of the change of kinetic energy?

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 person with mass mp = 77 kg stands on a spinning platform disk with a...
A person with mass mp = 77 kg stands on a spinning platform disk with a radius of R = 2.22 m and mass md = 195 kg. The disk is initially spinning at ω = 1.9 rad/s. The person then walks 2/3 of the way toward the center of the disk (ending 0.74 m from the center). 1) What is the total moment of inertia of the system about the center of the disk when the person stands on...
A person with mass mp = 70 kg stands on a spinning platform disk with a...
A person with mass mp = 70 kg stands on a spinning platform disk with a radius of R = 2.04 m and mass md = 186 kg. The disk is initially spinning at ω = 2 rad/s. The person then walks 2/3 of the way toward the center of the disk (ending 0.68 m from the center). What is the total moment of inertia of the system about the center of the disk when the person stands on the...
A person with mass mp = 79 kg stands on a spinning platform disk with a...
A person with mass mp = 79 kg stands on a spinning platform disk with a radius of R = 1.83 m and mass md = 183 kg. The disk is initially spinning at ω = 1.8 rad/s. The person then walks 2/3 of the way toward the center of the disk (ending 0.61 m from the center). 1) What is the total moment of inertia of the system about the center of the disk when the person stands on...
A person with mass mp = 75 kg stands on a spinning platform disk with a...
A person with mass mp = 75 kg stands on a spinning platform disk with a radius of R = 1.65 m and mass md = 187 kg. The disk is initially spinning at ω = 1.4 rad/s. The person then walks 2/3 of the way toward the center of the disk (ending 0.55 m from the center). 1) What is the total moment of inertia of the system about the center of the disk when the person stands on...
A person of mass 72 kg stands at the center of a rotating merry-go-round platform of...
A person of mass 72 kg stands at the center of a rotating merry-go-round platform of radius 2.7 m and moment of inertia 860 kg?m2 . The platform rotates without friction with angular velocity 0.95 rad/s . The person walks radially to the edge of the platform. Calculate the angular velocity when the person reaches the edge. Calculate the rotational kinetic energy of the system of platform plus person before and after the person's walk
A person of mass 70 kg stands at the center of a rotating merry-go-round platform of...
A person of mass 70 kg stands at the center of a rotating merry-go-round platform of radius 3.2 m and moment of inertia 860 kg⋅m2 . The platform rotates without friction with angular velocity 0.95 rad/s . The person walks radially to the edge of the platform. A. Calculate the angular velocity when the person reaches the edge. B. Calculate the rotational kinetic energy of the system of platform plus person before and after the person's walk.
1. A person of mass 75.0 kg stands at the center of a rotating merry-go-round platform...
1. A person of mass 75.0 kg stands at the center of a rotating merry-go-round platform of radius 3.00 m and moment of inertia 826 kg⋅m2. The platform rotates without friction with angular velocity of 0.955 rad/s. The person walks radially to the edge of the platform. You may ignore the size of the person. (a) Calculate the angular velocity when the person reaches the edge of the merry-go-round. (b) Calculate the rotational kinetic energy of the system of platform...
A uniform disk of mass Mdisk = 4 kg and radius R = 0.24 mhas a...
A uniform disk of mass Mdisk = 4 kg and radius R = 0.24 mhas a small block of mass mblock = 2.2 kg on its rim. It rotates about an axis a distance d = 0.16 m from its center intersecting the disk along the radius on which the block is situated. What is the moment of inertia of the block about the rotation axis? What is the moment of inertia of the disk about the rotation axis? When...
A person of mass 72 kg stands at the center of a rotating merry-go-round platform of...
A person of mass 72 kg stands at the center of a rotating merry-go-round platform of radius 3.3 m and moment of inertia 870 kg⋅m2 . The platform rotates without friction with angular velocity 0.90 rad/s . The person walks radially to the edge of the platform. part a: Calculate the angular velocity when the person reaches the edge. Express your answer using three significant figures and include the appropriate units. part b: Calculate the rotational kinetic energy of the...
If a disk is rotating from rest with an angular acceleration of 1.72 rad/s^2 for 5.67...
If a disk is rotating from rest with an angular acceleration of 1.72 rad/s^2 for 5.67 seconds, what is its final rotational kinetic energy? Take the moment of inertia of the disk to be 0.692 kg*m^2.
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT