A= 47 B=57 C=157 D=12

PLEASE SO CONFUSED I REALLY NEED HELP 4. D kg crate initially at rest is being lowered down a frictionless B/10 m ramp using a rope with tension B N in 30 degrees ramp.

Find the work done from gravity? (10 points)

Find the work done by the rope? (5 points)

Find the work done by normal force? (5points)

5. The block is starting from the rest and slides down a frictionless ramp a distance d before hitting the spring. Use =30,d=B/10 m, k=C N/m, mass of the box=D kg.

a) Take the spring totally compressed x distance, then state the equation to find x. Then plug the values and solve x? (10 points)

b) If there is a friction between the box and incline, What is the frictional force? Use kinetic friction coeficient as 0.5. (10 points)

c) Find the loss of energy due to friction when box reach d+x distance. (10 points)

d) What is the x with having friction? (10 points)