Question

16. A box of mass 1 kg. is pulled on a horizontal plane
of length Im by a force of 8 newtons then it is
raised vertically to a height of 2m, the net work
done is
(1) 28 joule (2) 8 joule
(3) 18 joule (4) None of the above​

Answer 1

Work done along horizontal  

W_x = F × x

= 8 × 1

= 8 J

Work done along vertical

W_y = F × y

= mgh

= 1 × 10 × 2

= 20 J

Net work done = W_x + W_y = 8 + 20 = 28 J

Answer 2

Answer:

18 joule

Explanation: