Question

Two man carry a concrete block weighting 400N using a light wooden plank on their shoulders. The strong man carries 225N. How should the block be supported so that the stronger man gets his share it the length of the plank between the solder is 3.5 meter.Ma​

Answer 1

Answer:

Weight of block in direction of the incline= 2sin15 kN= 0.52 kN (since weight of block acts downward)

W= Fs= 0.52(10)= 5.17 kJ

so work done is 5.17 kJ