Energy conversion efficiency of each bounce

In summary, the conversation discusses the energy conversion efficiency of a ball being dropped from a height of 10 meters and bouncing 3 times. The person is seeking help in finding the equation for energy conversion efficiency and relating the kinetic energy and potential energy of the ball. They also mention utilizing the drop height and bounce height to determine the conversion factor.
  • #1
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1. i drop a ball (mass 20 grammes) from a height of 10 meters, after 3 bounces it rises to a height of 2 meters, what is the energy conversion efficiency of each bounce?



2. I've been stuck on this for the last hour and have nothing any help would be great.



3.the closest i got was doing 10× random percentages 3 times and seeing how close i got
 
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  • #2
Welcome to PF!

Can you define, as an equation, what "energy conversion efficiency" means for a single bounce? (hint: it involves the kinetic energy of the ball before and after a bounce, and a conversion factor). Can you relate the kinetic energy of the ball when it is at zero height just before a bounce with the potential energy when it earlier was at height h, but with zero speed? Can you utilize all this to relate the drop height from before the first bounce to the bounce height after the last bounce? What must you assume about the conversion factor in order to do this?
 

Related to Energy conversion efficiency of each bounce

1. What is energy conversion efficiency?

Energy conversion efficiency refers to the percentage of energy that is converted into a desired form during a process. It is a measure of how well a system or device can convert input energy into usable output energy.

2. How is energy conversion efficiency calculated?

The energy conversion efficiency is calculated by dividing the amount of useful energy output by the total amount of energy input, and then multiplying by 100 to get a percentage. This calculation takes into account any losses of energy during the conversion process.

3. What factors affect the energy conversion efficiency of each bounce?

The energy conversion efficiency of each bounce can be affected by several factors, including the material and shape of the bouncing object, the surface it is bouncing on, and the amount of energy lost due to friction and air resistance.

4. How can we improve the energy conversion efficiency of each bounce?

To improve the energy conversion efficiency of each bounce, we can use materials that are more elastic, which can store and release energy more efficiently. We can also reduce the amount of energy lost due to friction and air resistance by using smoother surfaces and minimizing the weight of the bouncing object.

5. Why is it important to have high energy conversion efficiency in bouncing objects?

Having high energy conversion efficiency in bouncing objects is important because it allows for more efficient use of energy. This can lead to cost savings and reduced environmental impact, as well as improved performance and longer lifespan of the bouncing object.

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