Concept explainers
A car is lifted a certain distance in a service station and therefore has potential energy relative to the floor. If it were lifted twice as high, how much potential energy would it have?
The potential energy of car, when it is lifted twice high.
Answer to Problem 7RQ
The potential energy of car will be doubled, when it is lifted twice high.
Explanation of Solution
When an object is raised to a certain level of height, it gains potential energy.
Write the expression for potential energy.
Here,
When a car at service station is lifted to a height “
In the case, when the car is lifted to twice the height that is “
Write the expression for the changed potential energy.
So, it can be seen that the potential energy of the car, when the height is doubled, also gets doubled.
Conclusion:
Therefore, the potential energy of car will be doubled, when it is lifted twice high.
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