Question

The block of mass M moving on the frictionless horizontal surface collides with a spring of spring constant K and compresses it by L. The maximum momentum of the block after collision is

• A. $\sqrt{MK}$L
• B. $\frac{KL^{2}}{2M}$
• C. Zero
• D. $\frac{ML^{2}}{K}$

Answer 1

Answer: (A)

$\sqrt{MK}$L

Answer 2

$\frac{1}{2}KL^{2} = \frac{p^{2}}{2M}orp = \sqrt{MK}L$