A bicyclist is riding a bicycle on a flat road. (Figure 2) The combined mass of

Question

A bicyclist is riding a bicycle on a flat road. (Figure 2) The combined mass of the bicyclist and bicycle is m = 100 kg , the radius of each wheel is R = 33.0 cm , and the coefficient of rolling resistance between the tires and the road is a = 0.240 cm . The pedaling power of the bicyclist is translated to the back wheel through the tension in the chain that is wrapped around a set of gears. What is T, the tension in the chain that allows the bicycle to maintain a constant velocity when the chain is on the gear with a radius r = 3.80 cm ? Consider the combined weight to be evenly distributed between the two wheels.

I am getting 20.4 which is incorrect

Explanation / Answer

Here,

(W/2)*(a) - T(R+r) = 0

T =(W*a/2(R+r))

Substitute values:

= ((100*9.8)*(0.24*10^-2 m))/2(0.33 m+0.038 m))

T =3.195 N

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