Table of Contents
- 1 Why can you exert a greater force on the pedals of a bicycle if you pull up on the handlebars?
- 2 What happens to the speed of your bicycle when you pedal faster?
- 3 Can a dog wag its tail without the tail in turn wagging the dog consider a dog with a relatively massive tail?
- 4 When a table exerts a force on the book the book exerts a force on?
Why can you exert a greater force on the pedals of a bicycle if you pull up on the handlebars?
When you pull up with your hands on the handle bars, the reaction force means your body must have an equal force going downward. This will add force to your feet on the pedals.
What happens to the speed of your bicycle when you pedal faster?
As you go faster, the force of air resistance pushing back on you increases. Eventually, the forces become balanced (the forward forces are the same size as the opposing forces). Once the forces become balanced, your speed stays the same.
Which gear is hardest to pedal?
highest gear
The highest gear is when it’s hardest to pedal, this will move your bike at a fast speed if cruising along on the flat. The highest gear is when the chain is on the largest cog on the front and the smallest cog on the rear.
What is the effect of pedaling a bike in high gear?
In high gear (low cadence and higher force per pedal stroke for the same output, in comparison to higher cadence) you recruit more of your fast-twitch muscle, and thus you are doing more anaerobic (not aerobic) exercise. It’s OK if you’re going to commute half an hour or so.
Can a dog wag its tail without the tail in turn wagging the dog consider a dog with a relatively massive tail?
Explain. (Consider a dog with a relatively massive tail.) Newton’s Third Law tells us that the tail will exert a force on the dog as the dog exerts a force on the tail. Therefore the tail will also “wag the dog”.
When a table exerts a force on the book the book exerts a force on?
Newton’s 3rd law applies in all situations and to all types of force. But the pair of forces are always the same type, eg both gravitational or both electrical. And: If you have a book on a table the book is exerted a force on the table (weight due to gravity), and the table reacts with an equal and opposite force.
Can a bike go as fast as a car?
These days quite a few cars can reach 140 MPH and more. Typical touring motorcycles may be limited to 130 MPH or so, but even a touring motorcycle can out accelerate most cars up to 100 MPH or so. The faster sport bikes can reach speeds of almost 200 MPH and accelerate from 0–60 in about 2.5 seconds.