Calculate the centripetal force on the end of a 100 m (radius) wind turbine blade that is rotating at 0.5 rev/s. Assume the mass is 4 kg.

3947.6 N

Explanation:

Centripetal Force: This is the force that tend to moves a body towards the center of a circle during circular motion.

The formula for centripetal force is

F = mω²r ... Equation 1

Where F = Centripetal force, ω = angular velocity, r = radius.

Where π = 3.1415

Given: m = 4 kg, ω = 0.5 rev/s = (0.5*2π) rad/s = 3.1415 rad/s, r = 100 m.

Substitute into equation 1

F = 4 (3.1415) ² (100)

F = 3947.6 N

Hence the centripetal force on the turbine blade = 3947.6 N