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A block of wood weighing 25 N is subrnerged under water. If the net force on the wood is 5 N upward, how much buoyant force is acting on the wood?
A) 30 N upward
B) 20 N upward
C) 5 N upward
D) 25 N downward

Respuesta :

MathPhys

Answer:

A) 30 N upward

Explanation:

There are two forces on the block: buoyant force up and weight down.  The net force is 5 N up, so:

5 N = B − W

The weight is 25 N so:

5 N = B − 25 N

B = 30 N

The buoyant force is 30 N up.

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