If the coefficient of static friction at d is μd = 0.3, determine the smallest vertical force that can be applied tangentially to the wheel which will cause motion to impend.

The minimum force is required is, f = 0.3 mg Newton

Explanation:

Given data,

The coefficient of the static friction, μₓ = 0.3

Let the mass of the wheel is, m = M kg

The minimum force required to set the wheel in motion is equal to the force of static friction. This amount of force can be applied tangentially to the wheel in a vertical direction to set the wheel in motion.

Fₓ = μₓ. F

Where F is the normal force acting on the wheel and it is equal to mg.

Therefore, the minimum force is required is, f = 0.3 mg Newton