Question

how much is the mass of a man if he has to do 2500 joules of work in climbing a tree 5m tall g= 10 metre per second square

Answer 1

Work done = mass* g* height

2500=m*10*5

2500=50m

Mass = 50 kg

Answer 2

here is your answer OK ☺☺☺☺☺☺




Work done by a man by climbing a tree = W = 2500 Joules

Height from the ground = h = 5 metres

Gravitational acceleration = g = 10m/s2

To Find:



Mass of the man who has climbed the tree.

Solution:



We know that,

Potential energy (EP) = Work done (W)

and,

EP = mgh

... W = 10m*5

... 2500 = 50m

... 2500/50 = m

... m = 50 kg

... The mass of the man who has to do 2500 Joules of work by climbing a tree at a height of 5 metres is 50 kg