Table of Contents
- 1 How Does height affect the gravitational potential energy of an object?
- 2 How does height of ramp affect energy efficiency?
- 3 Why does height affect bounce efficiency?
- 4 Would you expect more energy to be lost to friction at lower ramp heights or higher ramp heights?
- 5 Does height decrease with kinetic energy?
How Does height affect the gravitational potential energy of an object?
Since the gravitational potential energy of an object is directly proportional to its height above the zero position, a doubling of the height will result in a doubling of the gravitational potential energy. A tripling of the height will result in a tripling of the gravitational potential energy.
Does height affect energy efficiency?
The efficiency of a ball can be calculated by dropping and measuring the height of the bounce. The higher the bounce, the more efficient the ball is. Balls which do not bounce high are less efficient as they have lost energy.
How does height of ramp affect energy efficiency?
The higher the ramp the higher the final velocity of the car. The higher the velocity of the car the higher the losses to air resistance (and friction). On the other hand, with a very low ramp a disproportionate amount of the potential energy is lost to rolling resistance and friction.
How does increasing the height of an object affect its mechanical energy?
Again, the work done on an object in lifting it a height h becomes kinetic energy when that object falls back to its original height. This is simply a mathematical way of saying that the kinetic energy increases as the potential energy decreases, and vice versa.
Why does height affect bounce efficiency?
If the drop height increases, then the resulting bounce height will also increase, because as the drop height increases, so does the gravitational potential energy which can be converted back into kinetic energy on the rebound.
How does the height from which a rubber ball is released affect the height that it bounces?
Thus a typical ball bounces to 60\% of its original height because it stores and returns 60\% of the energy it had before the bounce. When you drop a ball from a greater height, it has more kinetic energy just before it hits the floor and stores more energy during the bounce—it dents farther as it comes to a stop.
Would you expect more energy to be lost to friction at lower ramp heights or higher ramp heights?
Explain. I would expect more energy to be lost to friction at lower ramp heights because I would expect the sphere to travel farther distances as the height of the ramp is lowered. For example, if the ramp was not elevated at all the sphere would make it to the end of the ramp.
What is the efficiency of the ramp?
The efficiency of the ramp tells us what fraction of the input energy (kinetic energy) does useful work (lifting). If you have initial kinetic energy E=12mv2 then on a frictionless ramp you should be able to reach a height h=v22g.
Does height decrease with kinetic energy?
As the height increases, there is an increase in the gravitational potential energy P and a decrease in the kinetic energy K. The kinetic energy K is inversely proportional to the height of the object.
Does height affect kinetic energy?
Kinetic energy is simply the energy of motion. The faster that an object moves, the greater its kinetic energy. Often times (but certainly not always) a decrease in height will correspond to an increase in speed and a subsequent increase in kinetic energy.