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We define gravitational potential as: the work done to bring a small "test" mass from infinity to a point. But what does this truly mean?

1. The "work done" is simply the...

First, draw a diagram as it makes the problem easier to understand. Show the turntable and mass. Label the distance between the mass and the centre of the turntable r as it is a radius. write down all var...

Energy = force x distance and Energy = 0.5 x mass x velocity squared

Hence, force = (0.5 x mass x velocity squared) / distance --- (equation 1) This applies for both situation A and B, and given th...