Question

a machine lifts 20kg to a height of 5m in 4min .what is the power of the machine ? take g = m/s^-2

Answer 1

HEYA GM
POWER = WORK/TIME
⛈
=mgh/t
=20×5×10/4
=250J-S
Thank you....

Answer 2

$\mathfrak{solution}$

Given :

m = 20kg

h = 5m

$g = 10 {ms}^{ - 2}$

time t = 4 min

= 4 × 60 = 240s

work done or energy supplied = mgh

= 20 × 10 × 5

= 1000 J

$Power = \frac{ \: Energy \: supplied }{ \: time taken\: } \\ \\ = \frac{1000j}{240s} \\ \\ = 4.16w$

therefore the power of machine equal to 4.16 w.

be brainly