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Second Law of Motion

A 10 N forc...

Question

A $10 N$ force applied on a body produces in it an acceleration of $2 m s^{- 2}$ . The mass of the body is

2 k g

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5 k g

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10 k g

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20 k g

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Solution

The correct option is B $5 k g$
Applying Newton’s second law of motion,
$F = m a$
$\Rightarrow a = \frac{F}{m}$ and $m = \frac{F}{a}$
Here, $F = 10 N$ and $a = 2 m / s^{2}$
$\Rightarrow m = \frac{10}{2} = 5 k g$
Option $- B$ is correct.

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