Hi can you help me with 52,53 please

(H 52. The coefcient of static friction between the 3.00 kg crate and the 35 .0 incline shown here is 0300. What is the magnitude of the minimum force, F, that must be applied to the crate perpendicularly to the incline to prevent the crate from sliding down the incline? \\'f A 53. The graph shows a plot of the speed of a person's body during a chin-up. All motion is vertical and the mass of the person (excluding the arms) is 64.0 kg. Find the magnitude of the net force exerted on the body at 0.50 s intervals. Speed of a Body I. P O m P C Speed (cm/s) P o 0.00 0.50 1.00 1 .50 2.00 Time