1- A 2.40kg block is dropped into a spring with a force constant of 3.96 * 10^3

Question

1- A 2.40kg block is dropped into a spring with a force constant of 3.96 * 10^3 N/m from a height of 5 m when the block is momentarily at rest, the spring is compressed by 25 cm

a-find the speed of the block before it just touches the spring

b-find the speed of the block when the compression of the spring is 15cm

2. A 5 kg object with a speed of 4 m/s collides head-on with a 10 kg object moving toward it with a speed of 3 m/s. the 10 kg object stops dead after the collision.

a- what is the post collision speed of the 5 kg object ?

b- is the collision elastic ?

Explanation / Answer

krishnam answered 9 minutes later

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