Question

During a competition, a 60kg cyclist rides along a horizontal road on a bike with a mass of 5kg. During her ride, she changes gears and uses the chain wheel with a radius of 7.5cm and 36 teeth, and the rear sprocket with 18 teeth. The pedal handle is 20 cm in length.
a) Assuming that the cyclist puts her entire weight on the right-hand pedal, what force does she apply on the teeth of the chain wheel?
b) Calculate the force applied on the read sprocket at this point.
can someone help me on this too

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