A boy of mass 60 kg is standing stationary with respect to a treadmill accelerating at 2 m s-2. Find the net force on the boy. Also, if the coefficient of static friction between the boy’s sneakers and the treadmill is 0.3, up to what acceleration of the treadmill can the boy be stationary with respect to the treadmill?

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Q: frictional force

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Newton's Second Law

Newton’s laws of motion describe the relationship between the motion of an object and forces acting on it. Newton’s law of motion has two types as follows: