Question

Piano movers hoist a 200 kg piano 10 m high in 30 s using a rope and simple pulley. What is their power output?

70 W

700 W

7,000 W

6 × 10^5 W

Answer 1

U know
w=mgh=200*9.8*10=?

Answer 2

P=w/t=?

Answer 3

No, could you explain it a but more... easier?

Answer 4

*bit

Answer 5

Do u know
p=w/t?

Answer 6

Here
p=power
w=work
t=time

Answer 7

Work per unit time is called power

Answer 8

Response plz for better understanding!!!

Answer 9

U know
w=F*s=mgh

Answer 10

Here
F=force acting on object=mg
s=distance travelledcby object=h

Answer 11

Given
m=200 kg
h=10m
g=9.8m/s

Answer 12

w=F*s=mgh
m=200 kg
h=10m
g=9.8m/s

w=F*s=(200*10*9.8)
w=F*s= 19600

Answer 13

Sorry, I was reading the formula and trying to see how on google.

Answer 14

Its ok

Answer 15

So I got 19600 as the answer.

Answer 16

Feel free to ask for more clarification!!"

Answer 17

Okay is 19600 the correct answer?

Answer 18

No

Answer 19

p=200*9.8*10/30=?

Answer 20

Okay is 19600 the correct answer?

Answer 21

p=653.3w

Answer 22

Can you show me how you got the answer?