Question

An object falling solely under the influence of gravitational force is said to be in free fall or to be falling freely. Observe the given figure and calculate kinetic energy and potential energy at point A if an object having mass 'm', falling freely from height 'h​

Answer 1

An object falling solely under the influence of gravitational force is said to be in free fall or to be falling freely.

Now, we will calculate the KE and PE of the object at point A.

At point A , the objects starts from rest and falls under the influence of gravity; so it's initial velocity is zero.

$KE_{A} = \dfrac{1}{2} m {u}^{2}$

$\implies KE_{A} = \dfrac{1}{2} m {(0)}^{2}$

$\boxed{ \implies KE_{A} = 0 \: joule}$

Now, height at point A is 'h'; so potential energy will be :

$\boxed{PE_{A} = m \times g \times h}$

Hope It Helps.