If a 0.200-kilogram ball sits on a shelf 2.00 meters from the floor, how much mechanical energy (me) does it possess? more than 3.92 j exactly 3.92 j less than 3.92 j cannot be determined because kinetic energy cannot be calculated

Mechanical energy  = 3.92 J

exactly 3.92 j

Explanation:

As we know that mechanical energy is sum of kinetic energy and potential energy of the system

so here we can say that mechanical energy is sum of kinetic energy of ball and its potential energy

Since ball is at rest so kinetic energy of the ball must be ZERO

Now for potential energy we know that

now we know

m = 0.2 kg

h = 2 m

now for potential ene'rgy

so mechanical energy is given as

Mechanical Energy = 3.92 + 0 = 3.92 J

probably not if net force is zero

a electromagnetic waves