A mass of 1.00 x 10^2 kg crate is being pushed across a level floor at a constant speed by a force F of 3 x 10^2 N at an angle of 30.0° below the horizontal, as shown in Figure 1.
(a) Please draw a free body diagram. (b) What is the coefficient of kinetic friction between the crate and the floor?
If the 3 x 10^2 N force is instead pulling the block at an angle of 30.0° above the horizontal, as shown in Figure 2.
(c) Please draw a free body diagram. (d) What will be the acceleration of the crate? Assume that the coefficient of friction is the same as that you found in part (a).