Problem # 1.) a cyclist and her bicycle have a combined mass of 75.0 kg. if the frictional force acting against the motion of the bicycle is -23.5 N, what force must the cyclist apply to maintain a constant velocity? Problem #2.) a cyclist and her bicycle (combined mass of 75.0 kg.) apply a force of 34.2 N. if the frictional force is -23.5 N, what will be the acceleration of the bicycle?
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1) 23.5 N
For constant speed, the pushing force must equal the resistive force. That is all
2) F ( total ) = 34.2 – 23.5 = 10.7 = 75 . a
a = 10.7 / 75 = 0.143 m/s/s
For constant speed, the pushing force must equal the resistive force. That is all
2) F ( total ) = 34.2 – 23.5 = 10.7 = 75 . a
a = 10.7 / 75 = 0.143 m/s/s