Question

why does a 5 rs coin float in water but it is inside the water​

Answer 1

Explanation:

considering the fact that density of coin is very high in comparison of water and wood.

Density of coin is more so it was applying considerable force on wood before falling in water.

But once it'll fall, wood can't apply same force alone so wood will come a little up as result L will decrease.

when coin falls in water wood goes up so displaced volume decreases and coin has high density so it's volume is low and it doesn't displace liquid that much. As a result H will also decrease.