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 1.4 m in a time of 1.1 s. The readout on the display indicates that the average power you are producing is 84 W. What is the magnitude of the force that you exert on the handle?

Answer 1

Magnitude of the force exerted on the handle = 66 N

Step-by-step explanation:

Power is the ratio of work and time.

`P=(W)/(t)\\\\W=Pt=84* 1.1=92.4J`

We have work done by rower = 92.4 J

We also have

Work = Force x Displacement

92.4 = Force x 1.4

Force = 66 N

Magnitude of the force exerted on the handle = 66 N