A 40kg girl is running along a circular path of radius 1 m with a uniform speed. how much work is done by the girl in completing the circle??
Answers
Answered by
13
Work done is zero
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As we all know ,
Work done = Force x Displacement.
Here in this case , force is acting , but displacement is not there.
Displacement is the shortest distance from initial position to final position.
W = F x s
If s = 0 , W = 0
When displacement is zero ,
work done is also zero
--------------------------------------------------------------------------------------------------------------
As we all know ,
Work done = Force x Displacement.
Here in this case , force is acting , but displacement is not there.
Displacement is the shortest distance from initial position to final position.
W = F x s
If s = 0 , W = 0
When displacement is zero ,
work done is also zero
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Answered by
17
Mass = 40 g
Force = mass x gravity
= 40 x 9.8
= 392 N
After a complete rotation, Displacement is zero.
Displacement = 0
Work done = force x displacement
= 392 x 0
= 0
Hence, no work is done by girl.
Force = mass x gravity
= 40 x 9.8
= 392 N
After a complete rotation, Displacement is zero.
Displacement = 0
Work done = force x displacement
= 392 x 0
= 0
Hence, no work is done by girl.
mark as brainliest
ankit , 40 * 10 = 400
40*9.8=392
yes I was also writing about it
Yeah u r right
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koi computer to hu nhi
g8 answer :)
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