Exam_3_form D Solutions

# 0 n g 210 n 280 n d 350 n h 330 n 7 a solid disk with

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

This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: N F = Iα / R = (0.40 kg ⋅ m 2 )(14 rad/s)/(0.20m) C) 19.0 N G) 21.0 N = 28.0 N D) 35.0 N H) 33.0 N 7. A solid disk with a mass of 0.50 kg is rotating on a frictionless !0 surface with an angular speed of 15.0 rad/s. Another disk just above the first with the same radius is dropped onto the lower disk. Kinetic friction between the disks brings both disks to a common angular speed of 3.00 rad/s. What is the mass of the top disk? A) 0.50 kg E) 2.50 kg L0 = L, I 0ω 0 = Iω = ( I 0 + I top )ω B) 1.00 kg F) 3.00 kg I top = I 0 (ω 0 − ω ) / ω = I 0 (15 − 3) / 3 = 4 I 0 C) 1.50 kg G) 4.00 kg D) 5.00 kg H) 2.00 kg M top = 4 M 0 = 2.00 kg 8. A board in equilibrium has a mass of 23.0 kg, length 25.0 m is pivoted about one end. A rope tied...
View Full Document

## This document was uploaded on 03/03/2014 for the course PHY 231 at Michigan State University.

Ask a homework question - tutors are online