Homework Help: Physics

Posted by Jocelyn on Wednesday, June 29, 2011 at 6:21pm.

What is the angular momentum of the second hand on a clock if the clock has a length of 25cm, a mass of 20g, and is rotating with constant angular velocity. Treat the second hand as a thin rod.

Physics - Damon, Wednesday, June 29, 2011 at 6:29pm
I w
where I is moment of inertia
and
w is radians/second = 2 pi/period
period = 1 minute = 60 seconds

I = (1/3) M L^2 = (1/3)(.020 Kg)(.25 m)^2
= 4.17*10^-4
4.17 *10^-4 * 2 * pi / 60 = 4.36 * 10^-5

Answer this Question

Related Questions

Trig - Linear and angular speed Find w for each of the following: 1. the minute ...
Physics please check - An electric clock is hanging on the wall in the living ...
physics? - The minute hand of a bedside clock is 2.5 cm long. In order for the ...
English - It's two p.m. There is a clock picture on the page. Draw an hour ...
Physics - Find the angular velocity of a clock's second hand and the linear ...
Physics - Find the angular velocity of a clock's second hand and the linear ...
Physics - Find the angular velocity of a clock's second hand and the linear ...
physics - express the angular velocity of the second hand on a clock in rev/hr
physics - Consider the motion of the hour hand of a clock. What angle does the ...
physics - A pendulum clock was moved from a location where g=9.8152 m/s^2 to ...

For Further Reading

First Name:
School Subject:
Answer: