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Free Body diagram of bicycle
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[QUOTE="Doug Huffman, post: 4971514, member: 106968"] "Pedal, crank and pedal sprocket assembly" aren't standard bicycle terminology. For clarity it should be pedal, crank and chainring. The pedal is where the 800N is applied at the end of the 160mm crank arm opposite its attachment to the 100mm radius chainring. The 800N force is resisted by the resultant tension force in the top/power run of chain. The smaller circle at the left end of the top chain is the "cog(wheel/set)" where the top chain tension force times the cog radius creates the torque moment on the rear wheel. The bottom return run of chain is slack. [/QUOTE]
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Free Body diagram of bicycle
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