Question

an object of mass 40 kg is raised to a height of 5m above the ground what is its potential energy if the object is allowed to fall find its kinetic kinetic energy it is Halfway done

Answer 1

AnswEr:

Given,

• Mass , m = 40 kg

• Height, h = 5 m

• g = 9.8 $\sf{ms}^{-2}$

•• Potential energy = mgh

$\tt = 40 \times 9.8 \times 5 \\ \\ = \tt \: 1960 \: J$

____________________

When height becomes half, Potential energy gets halved --

$\tt = \cancel\frac{1960}{2} \\ \\ \tt = 980 \: J$

Loss in kinetic energy = Gain in kinetic energy = 980 Joule.

_________

• Potential energy :-

It is defined as the energy of a body due to its position or change in shape is known as potential energy.

Answer 2

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