Question

A man of mass 60 kg runs up a flight of 30 steps. If each step is 20 cm high, calculate the potential energy. (Take g = 10 m/s2) please tell i will mark as brainlist ​

Answer 1

Answer:

90 w

Explanation:

Solution :

Given :

Mass, m = 60 kg

Total distance, d = 30 x 20= 600 cm = 60 x 10-² m

Time, t = 40 sec

Acceleration due to gravity, g = 10 m/s²

To Calculate :

Power, P = ??

Formula to be used :

P = W/t = mgh/t

Substituting the given values, we get

P = 60 × 10 × 600 × 10-²/40

P = 3600/40

P = 90 W

Hence, the power is 90 W.

Answer 2

Explanation:

Given,

mass of man= 60kg

height = 20cm=0.2m

g= 10m/s2

total steps= 30 steps

potential energy = m×g×h

potential energy = 60×0.2×10

potential energy =120 joules

1 step = 120 joules

30 steps= 120×30 joules

30 steps = 3600 joules