Momentum and CollisionHard
Question
A wooden block, with a coin placed on its top, floats in water as shown in figure. The distance l and h are shown there. After sometimes the coin falls into the water. Then
Options
A.l decreases and h increases
B.l increases and h decreases
C.Both l and h increases
D.Both l and h decreases
Solution
l will decrease because the block moves up and h will decrease because the coin will displaced the volume of water (V1) equal to its own volume when it is in the water whereas when it is on the block it will displace the volume of water (V2)whose weight is equal to weight of coin and since density of coin is grater than the density of water, V1 < V2.
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