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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...

A moment about a point is the product of a force applied and the distance perpendicular to the line of action of that force. So M = F*d

The first and most important step is to highlight all the important information that is given in the question. Sometimes, it is very easy to miss out key numbers that you might require to get to the final...

For this we need to use a SUVAT equation. S=displacement U=initial velocity V=final velocity A=acceleration T=time In the question we are give U=0m/s since the ball is at rest to start with Since the ball...