- #1
Eitan Levy
- 259
- 11
Homework Statement
Everything we know is in the picture.
There is no friction between the body and the wagon and between the wagon and the floor.
What will be the maximum height that the body will reach on the wagon? (Answer:0.008v02)
What will be the velocities of the body and the wagon once the body reaches A again? (Answer:-v0, 0.4v0).
Homework Equations
m1v1+m2v2=m1u1+m2u2
0.5m1v12+0.5m2v22=0.5m1u1+0,5m2u22
The Attempt at a Solution
I tried applying conservation of momentum and conservation of energy to solve both of them.
For the second question:
mv0=mu1+4mu2
0.5mv02=0.5mu12+2mu22
Which gives incorrect answer, and if we look at the answers both of conservation of energy and conservation of momentum don't apply here.
Why? How can I solve this?