Question

A body of mass is at a height h. If it comes down, at what height its kinetic energy is equal
to potential energy ?​

Answer 1

Answer:

MGH

Explanation:

Initial Energy of the body

=K.E+P.E

KEi

=0,PEi

=mgh

Final Energy KEf +PEf

PEf

=0

Energy is conserved

Final Energy

= Initial Energy

KEf

=PEi

=mgh

Answer 2

Answer:

Where m is mass of the object, v is its velocity, g is acceleration due to gravity and h is height.

Thus mass being unchanging and g approximated to 9.8, the point where h = 0.051 × v × v will be where kinetic energy is equal to potential energy. This value is obtained by equating KE to PE and solving for ‘h’.