A) Define power.
B) A body of mass 45 Kg climbs up 20 steps in 20 sec if each step is 25 cm high, calculate the power
used in climbing. Take g = 10m/s2.
Answers
Answered by
3
★Any Doubt Ask It★
★Power is defined as the rate of doing work.
★Now, m = 45 kg,
n = 20,
t = 20 s,
h = 0.25 x 20 = 5 m
P = W / t = mgh / t
= (45 x 10 x 5)/20
= 112.5 W
★Keep Learning Keep Smiling★
★Power is defined as the rate of doing work.
★Now, m = 45 kg,
n = 20,
t = 20 s,
h = 0.25 x 20 = 5 m
P = W / t = mgh / t
= (45 x 10 x 5)/20
= 112.5 W
★Keep Learning Keep Smiling★
Attachments:
Answered by
2
A) The rate of energy consume in the electric circuit is called POWER .
B) Power is defined as the rate of doing work.
Now, m = 45 kg,
n = 20,
t = 20 s,
h = 0.25 x 20 = 5 m
P = W / t = mgh / t
= (45 x 10 x 5)/20
= 112.5 W
Similar questions