Question

A small submarine of mass 1000 kg sinks in water
with a uniform speed of 2 m/s. What is the result-
ant force exerted on the submarine as it sinks?
A ON
B 500 N
C 2000 N
D 10 000 N​

Answer 1

Answer:

500 N

Explanation:

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Answer 2

Answer:

A.) 0N

Explanation:

For the submarine to move with the constant velocity, the resultant force acting on it must be zero. If not, it may accelerate.

In this case, the gravitational force acted on submarine by earth (mg) is balanced either by the external force or force due to surface tension or both. The total net force becomes zero and submarine moves with constant speed.

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