mass is 5 lb attached to a rope wound around a pulley. The radius of the pulley is 3 in. If the mass falls at a constant velocity of 5 ft/s, determine the power transmitted to the pulley, in hp.

The power transmitted to the pulley is 0.0455 hp.

Explanation:

Given;

mass attached to the rope, m = 5 lb

radius of the pulley, r = 3 in

constant rate of fall of the mass, v = 5 ft/s

acceleration due to gravity, g = 32.2 ft/s²

1 lbf = 32.2 lb.ft/s²

The power transmitted to the pulley is calculated as;

P = Fv

P = (mg)v

in horse power, the power transmitted is calculated as;

Therefore, the power transmitted to the pulley is 0.0455 hp.

fgravity=10x10=100n case 1

fgravity=30x20=600n case 2

6 times more

answer; how far out of place which the object finished relative to the starting location;