athlete weighing 60kg runs up a staircase having 10 steps each of 1m in 30 sec. Calculate power (g = 9.8ms-1 )
Answers
Answered by
34
As we know,
Power = Work/Time
Since, Energy = Work done
So,
Power = Energy / Time
=mgh/t (mgh = Potential energy)
60 × 10 × 9.8 × 1 / 30 (Height = no. of steps × height of one step)
=60 × 98 / 30
=2 × 98
=196W
Power = Work/Time
Since, Energy = Work done
So,
Power = Energy / Time
=mgh/t (mgh = Potential energy)
60 × 10 × 9.8 × 1 / 30 (Height = no. of steps × height of one step)
=60 × 98 / 30
=2 × 98
=196W
rdeka9090:
ok please wait haa
w=60×9.8×1 = 5880/30=196watt
even if you take g as 10 answer should be 200w not 20
sorry if taken 10 then 20 and 9.8 then 196
Oh...Da n m
Sorey
Sorry*
I forgot to multiply g..
M sorry for being rude
no it's ok
Answered by
6
Answer:
Solution: h = 10 x 1m = 10m
Work done = potential energy = mgh = 60 x 9.8 x 10 = 5880 J
Power = w/t = 5880/30 = 196w
Similar questions