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13 July, 07:56

A 20 kg mass is moving down a ramp and there is friction. Describe all the forces acting on it using terms such as weight, spring force, gravitational force, etc.

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  1. 13 July, 11:07
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    mass of block, m = 20 kg

    let teh angle of inclination of the ramp with the horizontal is θ.

    Weight of the block = mg

    There are two components of the weight

    The component of weight of block along the plane = mg Sinθ

    The component of weight of block normal to the plane = mg Cosθ

    Friction force is acting opposite to the motion, i. e., along the plane and upwards, f = μN = μ mg Cosθ

    Look at the diagram to find the directions of force.
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