If a 0.200-kilogram ball sits on a shelf 2.00 meters from the floor, how much mechanical energy (me) does it possess?
Answer : The mechanical energy it possess is, 3.92 J
Solution : Given,
Mass of ball = 0.2 Kg
Height of object raised = 2 m
When an object falls then the formula used as,
\(w=mgh\)
where,
w = work done
m = mass of an object
h = height of object raised
g = acceleration due to gravity = \(9.8m/s^2\)
Now put all the given values in this formula, we get
\(w=(0.2Kg)\times (9.8m/s^2)\times (2m)=3.92J\)
Therefore, the mechanical energy it possess is, 3.92 J