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# Blob Collides with a Mass on a Spring: Finding Period

APPHMC-LFSZZD

A block of mass $m_1=0.5$ $\text{kg}$ hangs in equilibrium from a spring of force constant $k=5.0$ $\text{N/m}$. A mean student throws an indifferent blob of mass $m_2=0.1$ $\text{kg}$ upward at the block with a speed of 7.0 m/s. The blob sticks to the block, and they begin to oscillate.

With what period will the system now oscillate?

A

0.4 s

B

1.2 s

C

0.8 s

D

2.2 s

E

3.0 s