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WAEC Physics 2020 Paper

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Question : 25

Total: 51

The diagram illustrates a ball of mass m sliding down a plank inclined at an angle of 0 to the horizontal. The kinetic friction between the ball and the plank is F and acceleration of free fall is g . The normal force on the ball is?

mg‌s‌i‌n‌θ
mg‌tan‌θ,mg‌cos‌θ
mg‌cos‌θ
mg‌cot‌θ

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