Question

A person carrying a load of 20 kg climbs 4 m in 10 seconds. Calculate the work

Answer 1

Hi

Here is your answer,

Mass = 20kg

Height = 4m

Gravity = 10m/sec

Now Work done = mgh = 20×4 × 10= 800 joules.


Now the energy = 800 joules
Time = 10 seconds

Power= energy / time = 800/10 = 80W


Hope it helps you !

Answer 2

m=20

h=4

g=10

t=10

by formula,

mgh/t

20*10*4/10=800/10

ans=80