State the energy conversions taking place:

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TextTransformation of Energy Between FormsPrinciple of MomentsMechanical Advantage of an Inclined Plane3 sub-questions

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A uniform metre ruler is balanced horizontally on a knife edge placed at 60 cm mark when a mass m is suspended from 75 cm mark. Draw the diagram of the arrangement. State with reason (through mathematical steps) whether the mass of the scale is greater than, less than or equal to the mass m?

TextTransformation of Energy Between FormsPrinciple of MomentsMechanical Advantage of an Inclined Plane

An inclined plane makes an angle of 30° with the horizontal as shown in the figure. A box of mass 20 kg is taken from point A to point B along the inclined plane of length 2 m.

TextTransformation of Energy Between FormsPrinciple of MomentsMechanical Advantage of an Inclined Plane