One horsepower (hp) is the amount of power required to lift a 75-kg mass a vertical distance of 1 m in 1 s. What is 2 hp equivalent to in watts (W) ?

1470 W

Explanation:

Power: This can be defined as the rate at which work is done or energy is used up. The S. I unit of power is Watt (W).

The expression for power is given as,

P = Energy/time

P = mgh/t ... Equation 1

Where P = power, m = mass, h = height, t = time, g = acceleration due to gravity.

Given: m = 75 kg, g = 9.8 m/s², h = 1 m, t = 1 s.

Substitute into equation 1

P = (75*1*9.8) / 1

P = 735 W.

From the above,

1 hp = 735 W

2 hp = (2*735) W

2 hp = 1470 W.

Hence 2 hp = 1470 W