A horse has a power output of 1 hp 746 W) when it is pulling a cart. If the cart covers 100 m in 30 s, the force the horse exerts on the cart is
A) 0.22 kN.
B) 0.34 kN.
C) 0.45 kN.
D) 2.49 kN.

Question

Quizplus · Accepted Answer

The power output of the horse is given as 746 W, and the distance covered is 100 m in 30 s. Power is defined as work done per unit time, and work done is the product of force and distance (P = W/t = F*d/t). To find the force, we rearrange the formula to F = P*t/d. Substituting the given values, F = 746 W * 30 s / 100 m = 223.8 N, which is approximately 0.22 kN.

A Horse Has a Power Output of 1 Hp 746