Calculate the power output in watts of a 120 kg man who climbs a flight of stairs 5 m high in 6 seconds.?

Answer 1

Here,
the mass of the man, m = 120kg
vertical height, h = 5m
time, t = 6 seconds
gravitational acceleration, g = 9.8 m/s^2
power output, P = ?

Now, the work done, W = mgh
or, W = 120 * 9.8 * 5
so, W = 5880 Joule

Now, P = W/t
or, P = 5880/6
so, P = 980 Watts

The power output is 980 Watts. (Ans.)

Hope this was helpful.

Answer 2

calculate the potential energy of 120 kg, 5 m high (mgh) and then divide that by 6 seconds = 120*5*9.8/6= u figure it out and check ur units at the end, u may need to do a factor of 1000, i'm not telling

Answer 3

It relies upon on what lies previous that mountain. each step will lead you previous that mountain, yet then all of it ought to no longer bypass in ineffective. Its no longer continually that the hardest of annoying circumstances grants the finest of consequences. you may want to carry close what lies behind that mountain, and easily climb if its properly worth it. playstation : no longer continually might want to you climb the mountains; often times its solid to apply the valleys.

Answer 4

mgh gives energy, divided by time give power