Question

For a vertical spring-mass oscillator that is moving up and down, which of the following statements are true? (more than one statement may be true.) Select all that are True. At the lowest point in the oscillation, the momentum is zero. At the lowest point in the oscillation, mg>kssmg>kss At the lowest point in the oscillation, mg

Answer 1

Answer:

At the lowest point in the oscillation, the momentum is zero.

At the lowest point in the oscillation, $mg < ks_s$

Explanation:

Since spring block system is performing to and fro motion along straight line

So here we can say at the lowest position of its path the velocity will become zero.

So we can say that momentum of the spring block system is given as

$P = mv$

$P = 0$

Also we know that after reaching the lowest point the block will again go up towards its mean position

So at the lowest point of the spring block system the block will move upwards again

So this will accelerate upwards hence

$F_{spring} > mg$

$Ks > mg$