Question detail
What is the formula for calculating elastic potential energy stored in a spring, and what do the variables represent?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
Question
Type
exam_style
Style
Topic
Forces and elasticity
Question
What is the formula for calculating elastic potential energy stored in a spring, and what do the variables represent?
Answer
The formula for calculating elastic potential energy stored in a spring is Ee = 0.5 x k x e^2. In this formula, Ee represents the elastic potential energy (in joules), k is the spring constant (in newtons per metre), and e is the extension of the spring (in metres).
Explanation
This question assesses the student's ability to recall and explain the formula for elastic potential energy, including the meaning of each variable. It tests basic knowledge of the topic and ensures students understand the components involved in the calculation.
Common mistake
Misunderstanding Elastic Potential Energy
Students often think that doubling the extension of a spring will double the elastic potential energy stored in it.
Students should understand that elastic potential energy is proportional to the square of the extension, so doubling the extension actually increases the energy by a factor of four.
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