Question

8. Numerical problems (a) Hani drags a load of 60 kg along a distance of 12m. What amount of work does he do ? Also mention the type of work. salur​

Answer 1

• Mass=m=60kg
• Acceleration due to gravity=g=10m/s^2
• Distance=d=12m
• Force=F
• Work done=W

Applying Newton's law

`\\ \sf\longmapsto F=mg`

`\\ \sf\longmapsto F=60(10)`

`\\ \sf\longmapsto F=600N`

Now

`\\ \sf\longmapsto W=Fd`

`\\ \sf\longmapsto W=600(12)`

`\\ \sf\longmapsto W=7200J`

• Positive work done