Question

A man weighing 600 N carries a load of 150 N up stairs 6m high in 15 sec . His powers will be .​

Answer 1

$\maltese$ $\bold{\underline{\red{ANSWER :}}}$ $\maltese$

300W.

$\maltese$ $\bold{\underline{\red{SOLUTION :}}}$ $\maltese$

Given that :

•Displacement = 6 m.

•Time = 15sec

•Weight of man = 600N

•Weight of load = 150N

.°. Total weight = (600 + 150)N = 750N.

Now,

We know that,

=>W = F × S

=> W = (750 × 6)Nm

=> W = 4500J ( °•° Nm = Joule)

=>.°. P = W / t

=> P = (4500/15) J/s

=> P = 300W. (°•° J/s = Watt)

Therefore, his power will be 300W.