Question

What average mechanical power (in W) must a 69.0 kg mountain climber generate to climb to the summit of a hill of height 305 m in 48.0 min

Answer 1

Answer: Power= 71.61W

Explanation:

POWER = Work done / Time

But Work done = Gravitational Potential energy

= Mgh

Therefore Power = Mgh/ t

g= 9.8m/s

Where t in mins to secs becomes 48.0x 60=2880 secs

Power= 69x 9.8 x 305/ 2880

=206,241/2880

71.61W