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  • A spherical body of mass 2 kg starting from rest acquires a kinetic energy of 10000 J at the end of 5 th second. The force acted on the body is ______ N.Option:

A spherical body of mass 2 kg starting from rest acquires a kinetic energy of 10000 J at the end of 5 th second. The force acted on the body is ______ N.

Option: 1

40


Option: 2

__


Option: 3

__


Option: 4

__


Answers (1)

best_answer

\begin{aligned} & \text { Impulse }=\Delta \mathrm{P} \\ & \mathrm{F} \Delta \mathrm{T}=\mathrm{P}-\mathrm{O} \Rightarrow \mathrm{F} \Delta \mathrm{T}=\sqrt{2 \mathrm{mk}} \\ & \mathrm{F}(5)=\sqrt{2 \times 2 \times 10000} \\ & \mathrm{~F}=40 \mathrm{~N} \end{aligned}

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Kuldeep Maurya

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