Minimum force would be

Question

What minimum force would be required to get a 25 kg chunk of wood moving if it is sitting on wood (the coefficients for wood on wood are µs = 0.4 and µk = 0.2)?

Answer 1

Question: What minimum force would be required to get a 25 kg chunk of wood moving if it is sitting on wood (the coefficients for wood on wood are µs = 0.4 and µk = 0.2)?

Frictional force equation: F(f) = µF(n)

We use the coefficient of static friction since the block is stationary and the phrase "chunk of wood moving" suggests it is stationary.

F(f) = 0.4 (25 * 9.81) = 98.1 Newtons