homework 26

# homework 26 - homework 26 – NOORANI, ZOHEB 1 Latest...

This preview shows pages 1–2. Sign up to view the full content.

This preview has intentionally blurred sections. Sign up to view the full version.

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

Unformatted text preview: homework 26 – NOORANI, ZOHEB 1 Latest unpenalized work: Mar 31 2008 Mon- day 04:00 (after this date you can not make a perfect score). Work cutoff: Apr 1 2008, 4:00 am. Question 1, chap 13, sect 2. part 1 of 1 10 points A solid sphere has a radius of 0 . 75 m and a mass of 150 kg. How much work is required to get the sphere rolling with an angular speed of 89 rad / s on a horizontal surface? Assume the sphere starts from rest and rolls without slipping. Answer in units of J. Question 2, chap 13, sect 4. part 1 of 1 10 points A 2 kg object moves in a circle of radius 4 m at a constant speed of 3 m / s. A net force of 4 . 5 N acts on the object. What is the magnitude of the angular mo- mentum bardbl vector L bardbl of the object with respect to an axis perpendicular to the circle and through its center? 1. bardbl vector L bardbl = 12 m 2 s 2. bardbl vector L bardbl = 13 . 5 kg m 2 s 2 3. bardbl vector L bardbl = 9 N m kg 4. bardbl vector L bardbl = 24 kg m 2 s 5. bardbl vector L bardbl = 18 N m kg Question 3, chap 13, sect 4. part 1 of 1 10 points A solid steel sphere of density 7 . 57 g / cm 3 and mass 0 . 3 kg spins on an axis through its center with a period of 3 . 5 s. Given V sphere = 4 3 π R 3 , what is its angular momentum?...
View Full Document

## This note was uploaded on 09/16/2009 for the course PHY 303K taught by Professor Turner during the Spring '08 term at University of Texas.

### Page1 / 3

homework 26 - homework 26 – NOORANI, ZOHEB 1 Latest...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online