What is the gravitational potential energy associated whit the spoon at the height relative to the surface of the table. If a spoon is raised 21.0cm above a table and if the spoon and its contents have a mass of 30.0g.

0.062J

Explanation:

Given parameters:

Height of raising the spoon = 21cm

Mass of spoon  = 30g

Unknown:

Gravitational potential energy  = ?

Solution:

The gravitational potential energy of a body is the energy by virtue of the position of a such a body in space.

It is given as:

   G. P. E  = mgh

where m is the mass

          g is the acceleration due to gravity

          h is the height

Convert the parameters to appropriate units.

      21cm to m gives 0.21m

      30g to kg gives 0.03kg

   G.P.E  = 0.03 x 9.8 x 0.21  = 0.062J