a 20 kg crate is at rest on level ground a worker begins pushing horizontally on the crate with a force 300 Newtons, but the crate does not move determine the weight of the crate in both units of newtons and units of and units of pounds, determine the normal force acting on the crate in both units in units of newtons. If static friction is the only thing preventing the crate from moving determine the coefficient of static friction and explain whether or not this coefficient is valid.

Answer 1

weight=mass*g
= 20*9.8

mu=300/weight
mu=300/196

yes it is valid. The crate could be stuck in sticky paste