A horse pulled a cart from position A to position B through C and came back to position C as shown in figure . What is the work done by the horse , if the force applied by the horse is 100 N ?

Options

A. 4400 J
B. 3000 J
C. 1400 J
D. 1600 J

Answer

A

Explanation

Initially, the cart is moved from A to B, `s_(1)` = 30 m
Next, the cart is moved from B to C, `s_(2)` = 14 m
Final displacement of the body,
`s = s_(1) - s_(2) = 30 - 14 = 16 ms = s_(1) + s_(2) = 44` m
Force applied by the horse, F = 100 N
Work done by the horse,
`W = F xx S = 100 xx 44 = 4400` J
Hence, the correct option is (a).