Question

You are working out on a rowing machine. Each time you pull the rowing bar (which simulates the oars) toward you, it moves a distance of 1.2 m in a time of 1.5 s. The readout on the display indicates that the average power you are producing is 82 W. What is the magnitude of the force that you exert on the handle?

Answer 1

102.5N

Step-by-step explanation:

It is given that power =82 w

we that there is relation between work done and power as power is defined as the work done per unit time so
`P=(W)/(T)`

and there is other relation between work done and force as

work done= force × distance

putting the value of work done in power formula

`P=(F* X)/(T)`

where X= distance which is given as 1.2 m

T=1.5 sec

putting all these value in formula
`(82* 1.5)/(1.2)`

=102.5 W