A superball and a clay ball are dropped from a height of 10cm above a table top.

Question

A superball and a clay ball are dropped from a height of 10cm above a table top. They have the same mass 0.05kg and the same size. The superball bounces off the table and rises back to the same height. The clay ball sticks to the table. Match the shapes of the forces exerted on the superball and the clay ball by the table as a function of time.

Superballl=?

Clay Ball=?

Black dot-dash line (left)

Green solid line (right)

Black dotted line (left)

Red dashed line (right)

Cyan dashed line (left)

Yellow solid line (left)

Magenta dash-dot line (right)

Blue dotted line (right)

a.

Black dot-dash line (left)

b.

Green solid line (right)

c.

Black dotted line (left)

d.

Red dashed line (right)

e.

Cyan dashed line (left)

f.

Yellow solid line (left)

g.

Magenta dash-dot line (right)

h.

Blue dotted line (right)

LL L Time (s) Time (s)

Explanation / Answer

Superball=magnetic dash dot line (right) as there is instantaneous reaction force and force is maximum.

Clay ball= yellow solid line (left ) as there also instantaneous reaction force but as it is sticked to floor there is a small reaction force after stiking to floor.

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