A tandem (two-person) bicycle team must overcome a force of 165 N to maintain a speed of 9.00 m/s. Find the power required per rider, assuming that each contributes equally. Express your answer in watts and in horsepower.

Solution 53 E Step 1: Data given Force to overcome F = 165 N Velocity v = 9.0 m/s We need to find the power required by each rider This is obtained using P = F × v Substituting values we get P = 165 N × 9.0 m/s P = 1485 Watts Since both of them exert equal power We get power by each person as P/2 = 1485/2 = 743 watts To convert in terms of horsepower 0.00134102 743 watts × 1 watt = 0.99 Hp This can be approximated to 1 horsepower Hence the power by each person is 1.0Hp