Question

What is the average power output of an athlete who can life 9.0 * 10^2 kg 2.5 m in 2.0 s?

Answer 1

Average power output of athlete = 11025 Watts

Step-by-step explanation:

Work done is defined as the product of force applied and the displacement perpendicular to the force.

Work =
`Force* Displacement`

Power is defined as work done per unit time.

Power =
`(Work done)/(Time)`

Here the person lifts 900 kg.

Height = 2.5 m

Time interval = 2 seconds

Force =
`weight * gravity`

=
`900 * 9.8`

= 8820 N

Work done =
`Force* Displacement`

=
`8820 * 2.5`

= 22050 J

Power =
`\frac {22050}{2}`

= 11025 Watt