what is the work done by gravitational force to keep moon in orbit ??? pls help its urgent exam tommrw
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The mutual gravitational attraction between the earth and the moon is the only force keeping the moon in its orbit. If the force increased or decreased, the size and shape of the moon's orbit would remain essentially unchanged. The inertia of orbiting bodies "counters" gravity and keeps those bodies from being pulled together.
But on the practical grounds:
Work = force × distance moved in direction of force and (in circular motion) force is perpendicular to displacement
no movement in direction of force hence no work
Also speed of body remains constant (although velocity changes) which means kinetic energy is constant & potential energy is also constant!
Hope it help u!!!!
But on the practical grounds:
Work = force × distance moved in direction of force and (in circular motion) force is perpendicular to displacement
no movement in direction of force hence no work
Also speed of body remains constant (although velocity changes) which means kinetic energy is constant & potential energy is also constant!
Hope it help u!!!!
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