|

Mechanics

Scorching goIITian

 Joined: 2 Jan 2012 Post: 213
7 Jun 2012 21:03:39 IST
0 People liked this
1
237
momentum
Engineering Entrance , Medical Entrance , NEET , JEE Main , AIIMS , JEE Main & Advanced , Physics , Mechanics , Kinematics , NewtonsLawsCirMotion , Work Power Energy collisions , Rotation , Gravitation , Simple Harmonic Motion , Fluid Mechanics , Materials Wave Sound , Super Position , units dimensions , com momentum , shm , wave sound

Two identical trucks each of mass M (excluding sacks of rice) move on national highways with speeds v1 and v2 towards each other. When they meet each other, a sack of rice of mass m is thrown from one truck to the other and an identical sack of rice is thrown from the second to the first. Calculate their velocities v1? and v2? after the exchange of sacks, given m = 50 kg, M = 200 kg, v1 = 50 m/s and v2= 200 m/s. Friction of the road may be neglected.

Blazing goIITian

Joined: 22 May 2009
Posts: 2467
9 Jun 2012 12:07:47 IST
0 people liked this

consider first truck with speed 200m/sec and 50Kg sac with speed 50m.sec

Conserve momentum as their final velocity would be same.

150*200-50*50/200=v

137.5m/sec

Now simillarly conserve for other

-150*50+200*50=200V

V=12.5m/sec

The direction of motion of both the truck would be same.

 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

## For Quick Info

Name

Mobile

E-mail

City

Class

Vertical Limit

Top Contributors
All Time This Month Last Week
1. Bipin Dubey
 Altitude - 16545 m Post - 7958
2. Himanshu
 Altitude - 10925 m Post - 3836
3. Hari Shankar
 Altitude - 10050 m Post - 2205
4. edison
 Altitude - 10815 m Post - 7802
5. Sagar Saxena
 Altitude - 8625 m Post - 8064
 Altitude - 6330 m Post - 1979

Physics

Topics

Mathematics

Chemistry

Biology

Institutes

Parents Corner

Board

Fun Zone