A2.35 kg ball is attached to a ceiling by a3.53 m long string. the height of the room is5.03 m .the acceleration of gravity is 9.8 m/s2.
what is the gravitational potential energyassociated with the ball relative to the ceiling? answer in units of j.

-81.29 J

Explanation:

Given

mass of ball

Length of string

height of Room

Gravitational Potential Energy is given by

where h=distance between datum and object

here Reference is ceiling

therefore

Potential Energy of ball w.r.t ceiling

i.e. 81.29 J of Energy is required to lift a ball of mass 2.35 kg to the ceiling    

e/c, where e is its total energy