A particle of mass 100 g is thrown vertically

Asked by admin @ 20/08/2021 in Math viewed by 323 People

a particle of mass 100g is thrown vertically upwards with a speed of 5m/s.the work done by the force of gravity during the time particle goes up is?

Answered by admin @ 20/08/2021

Work done =f•s
m=100g
v=5m/s

force=mass×acceleration
0.1×(-g)=-1N

since acceleration is constant so

${v}^{2} - {u}^{2} = 2as$
-25=2(-g)s
s=1.25

now work done=-1N×1.25m

-1.25 joules is answer.

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a particle of mass 100g is thrown vertically upwards with a speed of 5m/s.the work done by the force of gravity during the time particle goes up is?

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