Problem_of_the_Week_–_12

Problem_of_the_Week_–_12 - there. The...

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
Problem of the Week – 12 A rod of length L and negligible mass is attached to a disk of mass M and radius R. A string is wrapped around the disk, and you pull on the string with a constant force F. Two small balls each of mass m slide along the rod with negligible friction. The apparatus starts from rest, and when the center of the disk has moved a distance d, a length of string s has come off the disk, and the balls have collided with the ends of the rod and stuck
Background image of page 1
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: there. The apparatus slides on a nearly frictionless table. Here is a view from above: a) At this instant, what is the speed v of the center of the disk? b) At this instant, the angular speed of the disk is . How much thermal energy has been produced? c) In the next short amount of time t, by how much will the angular speed change ( )? d) Bonus: Instead of assuming that you know in part (b), solve for it!...
View Full Document

Ask a homework question - tutors are online