Question

how is power related to the speed at which a body can be lifted
​

Answer 1

Answer:

Power = work/time

work=force x displacement

force = mass x acceleration

acceleration=velocity/time

Therefore

Power=(velocity)*(mass)*(displacement) ÷ (time)*(time)

In the question

power,P=100W

velocity,v=1m/s

since time,t=1s

displacement, s=1m

acceleration,a=10m/s (acceleration to overcome gravity)

we have to find mass m

P=m×a×s÷t

100=m×10

m=10

4.6

43 votes

THANKS

92

Comments Report

ananyakhandelwal04 Helping Hand

(A)Power = work / time

Work = Force*distance

Therefore , power = F*distance/time

Now distance/time = velocity

Therefore, F* v =work

(B) 100 watt = F*1m/s

F= mg

mg=100watt

g=10m/s2

Therefore, m= 100/10 =10 kg

Please mark it as brainliest