Question

What type of energy does a cup sitting on a table have? Why?

Answer 1

A cup sitting on a table has potential energy, while not holding kinetic NRG; as the cup is at rest.


`E_(p)= mgh`

As the mass and gravitational constant are constant and the height is not zero, the cup has potential NRG


`E_(K)= (mv^2)/(2)`
v= 0

`E_(K)= (m0^2)/(2) = 0`


If we look at the formula for kinetic energy,the NRG is zero as v = 0