Question

WORK - POWER - ENERGY
PHYSICS - C3 - PART- 11
10. A man weighs 65 kgwt and liſts 45 kg mass to the top of the building 10 m high in 10 seconds. The horse
power of a man is (g = 10ms?)
[ ]
a) 15 hp
b) 150 hp
c) 1.5 hp
d) 1500 hp
A truck tows a trailer of mass 1200 ke at a steady speed of 10melon. level T.​

Answer 1

Step-by-step explanation:

I'm assuming that you want to know the power delivered by the man in lifting the 45kg trunk.

So as you may know, the change in potential energy is equal to the work done by an external agent.

Therefore,

45kg x 10m/s^2 x 10m = 4500J

Power delivered is rate of work done, therefore,

4500J/60s= 75 W

Do let me know if I made a mistake.

Hope this was helpful.

Answer 2

Step-by-step explanation:

a is the anwnser ok bhai write it