Work done = mgh Mass, m = 33kg ( Am presuming it is 33 kg). h = 85 m. Work done = 33 * 9.81* 85 = 27517.05 J.
Time taken. Since object was dropped from height, it fell under gravity. Using H = ut + (1/2) * gt^2. u = 0. H = 1/2 gt^2. t = (2H/g) ^ (1/2) t = (2*85/9.81) ^ 0.5 = 4.1628 s.
Power = 27517.05 / 4.1628 = 6610.23 Watts. = 6610 W to 3 S. f.
G is the gravitational constant, which is approximately 6.6x10^-11 Nm/s^2. It has the same value regardless of the masses of both objects or the distance between them.
An internal-combustion engine goes through four strokes: intake, compression, combustion (power), and exhaust. As the piston moves during each stroke, it turns the crankshaft.
