Question

An object of 10 kg mass is thrown vertically upward with a velocity of 8 m/s. Calculate the potential energy at the maximum height.

Answer 1

                                                    B (maximum height)

                                                                   

                                                                  A (Point of projection)

Mass of the object,

At point A:

Velocity,

Kinetic energy

         

Potential energy ( Taking point A as reference point)

Total mechanical energy,

At point B:

Velocity,

So, kinetic energy

              

Potential energy

Total mechanical energy,

Now, apply conservation of total mechanical energy,