Answer:
The mechanical energy of this object is 10.8 Joules.
Explanation:
Mechanical energy is the sum of kinetic energy and potential energy.
\(M.E=P.E+K.E\)
\(M.E=mgh+\frac{1}{2}mv^2\)
m = mass of the object
v = velocity of the moving object
h = height at which an object is placed
g = Acceleration due to gravity
We have : m = 2 kg. v = 1 m/s , h = 1/2 m
\(M.E=2 kg\times 9.8 m/s^2\times \frac{1}{2}m+\frac{1}{2}\times 2 kg \times (1 m/s)^2\)
\(M.E=9.8 J+1 J=10.8 J\)
The mechanical energy of this object is 10.8 Joules.
