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A small block of wood of relative densit...

A small block of wood of relative density 0.5 is submerged in water. When the block is released, it stats moving upwards, the acceleration of the block is `(g=10 ms^(-2))`

A

`5 ms^(-2)`

B

`10 ms^(-2)`

C

`7.5 ms^(-2)`

D

`15 ms^(-2)`

Text Solution

Verified by Experts

The correct Answer is:
B
`alpha=("Upthrust-Weight")/("Mass")=(Vrho_(w)g-Vrhog)/(Vrho)`
`=((rho_(w)-rho)/rho)g=((1-0.5)/(0.5))(10)=10 ms^(-2)`
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