The work done by the force of gravity on a satellite moving around the earth is zero?
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W= force * displacement (both vectors)
the force of gravity acts on the centre of the earth... so the workdone by the moving satellite is in the circular path so force is always perpendicular to the centre of gravity
that is cos90 is 0 so the workdone by the satellite is zero
the force of gravity acts on the centre of the earth... so the workdone by the moving satellite is in the circular path so force is always perpendicular to the centre of gravity
that is cos90 is 0 so the workdone by the satellite is zero
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The satellite moves around the earth in a circular path.
The gravitational force of the Earth is the centripetal force.
Then at every point of the circular orbit, centripetal force act on the satellite at right angles to the direction of motion of the satellite, θ = 90º.
We Know, W = F s cos θ
= F s cos 90º
= F s (0)
= 0 ...✔
_________
Thanks...✊
The satellite moves around the earth in a circular path.
The gravitational force of the Earth is the centripetal force.
Then at every point of the circular orbit, centripetal force act on the satellite at right angles to the direction of motion of the satellite, θ = 90º.
We Know, W = F s cos θ
= F s cos 90º
= F s (0)
= 0 ...✔
_________
Thanks...✊
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