Answer : W = 450 J and P = 56.25 Watts
Explanation :
It is given that,
Force, F = 30 N
Distance, d = 15 m
Time, t = 8 sec
The work done is given as :
W = F.d
\(W=30\ N\times 15\ m\)
\(W = 450\ J\)
So, the work done to push a box across the floor is 450 N.
Mechanical power is defined as,
\(P=\dfrac{Work}{time}\)
\(P=\dfrac{450\ J}{8\ s}\)
P = 56.25 Watt
The power is 56.25 Watts.
Hence, this is the required solution.
