A 72 kg crate is dragged across a floor by pulling on a rope attached to the crate and inclined 15° above the horizontal.
(a) If the coefficient of static friction is 0.49, what minimum force magnitude is required from the rope to start the crate moving?
N
(b) If µk = 0.34, what is the magnitude of the initial acceleration of the crate?
m/s^2