15 A cyclist is towing a trailer behind her bicycle.
She is riding along a straight, horizontal path at a constant speed.
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A tension of \(T\) newtons acts on the connecting rod between the bicycle and the trailer.
The cyclist is causing a constant driving force of 40 N to be applied whilst pedalling forwards on her bicycle.
The constant resistance force acting on the trailer is 12 N
15
- State the value of \(T\) giving a clear reason for your answer.
15 - State one assumption you have made in reaching your answer to part (a).