Forces Acting on Cycling: Explaining Maximum Speed

  • Thread starter roxas
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In summary, when a person pedals as fast as they can on a bike and stops accelerating, their speed will reach a maximum value, also known as terminal velocity. This is due to the balance of forces, specifically the pedalling force being equal to the resistive forces, including friction and air resistance. As the speed increases, the resistive forces become larger and eventually counteract the pedalling force, resulting in a constant velocity.
  • #1
roxas
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if a person pedals as fast as he can on a bike, and stops accelerating, and his speeds reaches maximum value. how do i explain it in terms of forces acting. can someone please provide me wth a model answer thx. ( by the way i know he reaches terminal velocity, but i don't know how to explain it in forces)
 
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  • #2
can i say the force exterted equals the frictional force, and so she reaches a constant velocity? i noe i am liek retarded: anyway please help me asap=(
 
  • #3
Yes that's basically it, except friction here includes the air resistance. Resistive forces get bigger as the speed increases and eventually reach the point where they balance the pedalling force, so no further acceleration
 

FAQ: Forces Acting on Cycling: Explaining Maximum Speed

What is the maximum speed a cyclist can achieve?

The maximum speed a cyclist can achieve is dependent on various factors such as the cyclist's physical abilities, the type of bicycle, and the terrain. However, the average maximum speed for a professional cyclist on flat terrain is around 40-50 kilometers per hour.

What forces act on a cyclist while riding?

The main forces acting on a cyclist while riding are gravity, air resistance, rolling resistance, and friction. Gravity pulls the cyclist and the bicycle towards the ground, while air resistance creates drag and slows down the cyclist. Rolling resistance occurs due to the friction between the tires and the road surface, and friction is caused by the contact between the moving parts of the bicycle.

How do these forces affect the maximum speed of a cyclist?

The forces acting on a cyclist have a significant impact on the maximum speed they can achieve. For example, air resistance and rolling resistance increase as the speed increases, making it harder for the cyclist to maintain a high speed. On the other hand, gravity can also play a role in increasing speed when going downhill.

Can a cyclist overcome these forces to increase their maximum speed?

Yes, a cyclist can minimize the impact of these forces by using aerodynamic equipment such as aero handlebars, helmets, and wheels. Additionally, maintaining proper body positioning and pedaling technique can also help reduce the effects of these forces and increase maximum speed.

How does drafting affect a cyclist's maximum speed?

Drafting, also known as slipstreaming, is the practice of riding closely behind another cyclist to reduce air resistance. This can significantly increase a cyclist's maximum speed as they can save energy by riding in the slipstream of the cyclist in front. This technique is often used in professional cycling races to gain an advantage over competitors.

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