why is it so difficult to drive a bicycle on a concrete road with less pressure in the tyres
Answers
Explanation:
Over a long period of time, the tires slowly leak air, so their pressure will decrease. Have you ever noticed that it is actually harder to ride a bike when the tire pressure is too low? This is because the tires are a big factor in the rolling resistance of the bike.
Answer:
Think of your wheel encountering an obstacle (like a small stick) on a smooth track. You experience the small deceleration as the wheel hits the stick and begins to climb over it, then you continue on. We’ll ignore a second wheel for right now.
Now imagine the uneven road. Chip seal, maybe, which is extremely rough. Your wheel encounters dozens of small obstacles every foot. It has to climb up over, then descend down. Each upward motion takes energy, and reduces the wheel inertia as the wheel slows down. This requires some energy input to keep up your speed. This constantly changing force is felt by the rider through all the attachment points (handle bars, seat, pedals).
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