Question

50 kJ of energy causes a displacement of 25 m in a body in the direction of force in 2.5 s. Find the power in horsepower.

• A. 26.8 hp
• B. 28.6 hp
• C. 13.4 hp
• D. 14.3 hp

Answer 1

The correct option is A

26.8 hp

Power is defined as the rate of change of energy.
So, $Power=\frac{50\times {10}^3}{2.5}$

= $2\times {10}^{4}W$

Now, we know that,
$1hp=746W$
$\therefore Power=2\times {10}^{4}W$
$=\frac{2\times {10}^4}{746}=26.8hp$