Question

A man with a mass of 65kg climbs and stands on top of a mountain of height 800m.
Calculate his potential energy. (g= 10m/s2)
that's a boring work
but Okie ฅ^•ﻌ•^ฅ​

Answer 1

Answer:

The weight of the man is his mass multiplied by the acceleration due to gravity. If we take the acceleration due to gravity at ground level as 9.81m/s^2 then his weight standing on the ground will be

Weight = mg = 65 * 9.81 = 637.65 Newtons

When he climbs the ladder he moves further away from the centre of the earth so gravity and he weight will be slightly lower at the top compared to the bottom of the ladder. However the difference is negligible as the radius of the earth is many thousands of kilometers and the ladder only 25m. So a reasonable answer would be 637 N at the top or bottom of the ladder.

Answer 2

Answer:

5,20,000 J

Step-by-step explanation:

potential energy= mgh

mass(m)= 65 kg

gravitational acceleration(g)= 10m/s²

height(h)= 800m

:. potential energy= 800×10×65= 5,20,000 J