Advertisements
Advertisements
Question
How many watts equal one horse power?
Advertisements
Solution
The relation between two units of power is as follows -
1 hours power = 746 W
1 h.p. = 746 W
APPEARS IN
RELATED QUESTIONS
Why is a jack screw provided with a long arm?
Find the kinetic energy of a body of mass 1 kg moving with a uniform velocity of 10 m s-1.
A car is being driven by a force of 2.5 ✕ 1010 N. Travelling at a constant speed of 5 m/s, it takes 2 minutes to reach a certain place. Calculate the work done.
A boy pulls a box up to 10 m with a force of 5 kgf. Calculate the work done by him.
A girl of mass 50 kg runs up a flight of 40 steps in 20 seconds. If each step in 20 cm high, calculate the power developed by the girl. (g= 10 ms-2).
Fill in the boxe to show the corresponding energy transformation.

A canon ball of mass 500g is fired with a speed of 15m/s-1. Find: its momentum.
A girl of mass 40 kg runs a height of 80 stairs, each 25 cm high with a load of 20 kg on her head in 25 sec. If g is 10 m/s2, find:
(i) Gravitational force acting on the girl.
(ii) Work done by her.
(iii) Useful work done by her.
(iv) Her power in watt.
