A box with weight of magnitude F_G = 2.00 N is lowered by a rope down a smooth plane that is inclined at an angle φ = 30.0 degrees about ve the horizontal. The normal force acting on the box has a magnitude n = 1.73 N, the tension force is 1.00 N, and the displacement Δr of the box is 1.80 m down the cloned plane. What is the work W_G done on the box by the gravity?

1.8 J

Explanation:

I had this exact question today and found someone who had solved it before, this was their response to the work done by gravity. They used the name "physicsmom"

Vertical distance = 1.8 sin 30 = .9 m

W = 2 N * .9 m = 1.8J

Good luck! I hope this helps!

a peregrine falcon dives at a pigeon. the falcon starts downward from rest and falls with free-fall acceleration. if the pigeon is 75.6 m below the initial position of the falcon, how long does the falcon take to reach the pigeon? assume that the pigeon remains at rest. the acceleration of gravity is 9.8 m/s 2 . answer in units of s.