A cyclist is travelling in a straight line along a horizontal road at a constant speed.
A constant driving force $F$ acts on the cyclist in the forward direction shown.
Which statement about the magnitude of the frictional forces acting on the cyclist is correct?
The magnitude is equal to $F$.
2 )
The magnitude is smaller than $F$, but greater than zero.
3 )
The magnitude is greater than $F$.
4 )
The magnitude is zero.
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