Answer:
Workdone(W) = Force(Newton[N]) x displacement(metres([m])
Weight of box = mg = 34Newton
mass of weight = 34/9.81 = 3.4658m
Now Workdone = Force x displacement
but Force = mg
Hence, Workdone = mg x displacement
Workdone = 3.4658 x 9.81 x 2 = 68Nm = 68Joules(J)
Explanation:
Whenever a load is moved up an height, gravity always acts against it. This accounts for the need to know the actual mass of the box.
