Slok walks 1.5km carrying a load of 500N in half an hour . Calculate his work and power .

Question

asked Oct 1, 2021 223k views

1 Answer

Catwalk · Answer 1 · 2021-10-08T12:46:59+0000

Answer:

W = 250 kJ and P = 138.88 W

Step-by-step explanation:

Weight of the load, F = 500 N

She walks a distance, d = 1/5 km = 500 m

Time, t = 1/2 h = 1800 s

We need to find his work done and the power.

Work done,

W = F d

W = 500 N × 500 m

= 250000 J

= 250 kJ

Power = W/t

Putting all the values,

$P=(250000)/(1800)\\\\=138.89\ W$

Hence, the work done is 250 kJ and power is 138.88 W.