Question

b)Find the work done by a man weighing 70kg in carrying 6 bricks of 5kg each up a ladder 6 meter

long making an angle 30˚ with the horizontal.​

Answer 1

Answer:

Given,

Mass of the man is 140kg

Weight of load m=20kg

Length of ladderL=16m

Angleθ=30

So, Total mass M=140+20=160kg

g=9.8m/s2

Height h=Lsin30=16×0.5=8 m

Work done W=Mgh=160×9.8×8=1.2544×10*4j

I think this will be helpfull to you