Question

While rowing in a race, John uses his arms to exert a force of 155 N per stroke

while pulling the oar 0.7500 m. How much work does he do in 25 strokes?

Answer 1

Workdone = 2906.25J

Step-by-step explanation:

Given the following data;

Force, F = 155

Distance, d = 0.75

Stroke, s = 25

Mathematically, work done is given by the formula;

Work done = force * distance * stroke

`W = F * d * s`

Where,

W is the work done

F represents the force acting on a body.

d represents the distance covered by the body.

s is the number of strokes.

Substituting into the equation, we have;

`Workdone = 155*0.75*25`

Workdone = 2906.25J