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shortening, abridging and streamlining
Reduce the friction
An inclined plane makes work easier because it allows for a longer distance over which a force can be applied. By exerting a smaller force over a longer distance, the amount of work required is reduced. However, the force exerted remains the same, as the incline does not change the magnitude of the force needed.
F is inversely proportional to r*r . therefore the force will be reduced by the factor of 16th. hence the gravitational force will be 125N.
Reduced 60%