A particle is acted upon by a force whose component's variations with time are shown

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4-1.Newton's Laws of Motion

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A particle is acted upon by a force whose component's variations with time are shown in diagrams. Then the magnitude of change in momentum of the particle in $0.1\,\,sec$ will be :-

A

$2\,\,kg\, m\,/\,sec$

B

$10\,\,kg\, m\,/\,sec$

C

$12\,\,kg\, m\,/\,sec$

D

$5\sqrt 2\,\,kg\, m\,/\,sec$

Solution

$\Delta p_{x}=3 \mathrm{NS}$

$\Delta p_{y}=4 \mathrm{NS}$

$\Delta p_{z}=-5 N S$

$\Delta p=\sqrt{3^{2}+4^{2}+5^{2}}=5 \sqrt{2} \mathrm{NS}$

Standard 11

Physics

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