IDNStudy.com, ang iyong gabay para sa mga sagot ng eksperto. Magtanong at makatanggap ng eksaktong sagot mula sa aming mga bihasang miyembro ng komunidad.

In one movie scene, the hero lifts the 95 kg villain straight up through a vertical distance of 1.2 m in 0.52 s at constant speed. What power did he produce?

Sagot :

First you need to solve the energy required to lift that villain to a specific height. 

PE = mgh (Potential energy = mass x gravity x height)

PE = 95 kg x 9.8 m/s2 x 1.2 m
PE = 1117.2 Joules or newton-meter (J or N.m)

Then solve for power:

Power = Work/Time
Power = 1117.2 Joules/0.52 s
Power = 2148.46 Watts (W)