Question

Define potential Energy. Write expression for Potential Energy possessed by a body lifted to

certain height ‘h’. A person of 60kg climbs a stair case and reaches to a height of 4m.

Calculate the potential energy acquired by the person. (take g = 10m/s2)​

Answer 1

Answer:

the energy possessed by a body by virtue of its position relative to others, stresses within itself, electric charge, and other factors. is called potential energy...

Answer 2

Answer:

Potential Energy definition :

                        The energy gained by an object due to change in relative position of that object is called Potential Energy

Expression:

         P.E. = mgh

Here,

m - Mass of obj.

g - acceleration due to gravity

h - height or distance between the objects

SUM:

Given:-

Mass(m) = 60 kg

Acceleration due to gravity (g) = 10 m/s

Height (h) = 4m

• P.E. = mgh

⇒ P.E. = 60 x 10 x 4

⇒ P.E. = 60 x 40 = 2400 Joules (J)

Therefore the person gained 2400 Joules of energy by  climbing the stairs of height 4m.