Home » Ask & Discuss » Physics. » Mechanics « Back to Discussion



Mechanics

edison's Avatar
Forum Expert
Joined: 19 Oct 2006
Post: 7537
10 Apr 2008 13:23:28 IST
0 People liked this
2
815 View Post
Frictionless surface
None

A thin uniform rod is initially positioned in the vertical direction, with its lower end attached to a frictionless axis that is mounted on the floor. The rod has a length of 2.00 m and is allowed to fall, starting from rest. Find the tangential speed of the free end of the rod, just before the rod hits the floor after rotating through 90 degree.
a.       3.59 m/s
b.      4.26 m/s
c.       5.89 m/s
d.      7.67 m/s
e.       6.83 m/s


Share this article on:

Comments (2)

ashish banga's Avatar

Blazing goIITian

Joined: 16 Dec 2006
Posts: 1362
10 Apr 2008 13:28:53 IST
0 people liked this

7.67
ashish banga's Avatar

Blazing goIITian

Joined: 16 Dec 2006
Posts: 1362
10 Apr 2008 13:29:34 IST
0 people liked this

use conservation of energy
mg(l/2) = 1/2 I w^2
find w
then velocity of free end = l w



Quick Reply


Reply

Some HTML allowed.
Keep your comments above the belt or risk having them deleted.
Signup for a avatar to have your pictures show up by your comment
If Members see a thread that violates the Posting Rules, bring it to the attention of the Moderator Team
Free Sign Up!

Preparing for IIT-JEE ?

Arihant Revision Package for IIT JEE - Books, Practice Tests + Rank Predictor


@ INR 1,995/-

For Quick Info

Name

Mobile No.

Find Posts by Topics

Physics.

Topics

Mathematics.

Chemistry.

Biology

Parents

Board

Fun Zone

Sponsored Ads