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>>Work Done by a Variable Force
>> $A particle of mass m is moving with spee$

Question

A particle of mass $m$ is moving with speed $u$ . It is stopped by a force $F$ in distance $x$ . If the stopping force is $4 F$ then

A

work done by stopping force in second case will be same as that in first case

B

work done by stopping force in second case will be $2$ times of that in first case

C

work done by stopping force in second case will be $\frac{1}{2}$ of that in first case

D

work done by stopping force in second case will be $\frac{1}{4}$ of that in first case

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Updated on : 2022-09-05

Solution

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Correct option is A)

As $Δ K E$ is same in both the cases, work done will be same.

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