Question detail
If a 5 kg object is raised to a height of 10 m in a gravitational field strength of 9.8 N/kg, calculate the gravitational potential energy gained by the object.
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
Question
Type
exam_style
Style
Topic
Energy changes in a system, and the ways energy is stored before and after such changes
Question
If a 5 kg object is raised to a height of 10 m in a gravitational field strength of 9.8 N/kg, calculate the gravitational potential energy gained by the object.
Answer
The gravitational potential energy gained is 490 J.
Explanation
This question requires students to apply the gravitational potential energy equation, reinforcing their calculation skills and understanding of energy changes in a physical system. This answer is linked to Changes in energy because it applies the learning objective: Apply the equation Ep = m x g x h when gravitational field strength is given.. It shows the Physics relationship clearly and keeps energy, power, work done and efficiency terms distinct where they appear.
Common mistake
Common Mistake in Gravitational Potential Energy Calculation
Students often confuse the variables in the equation Ep = m x g x h, mistakenly using height in kilograms instead of metres.
Always ensure that height (h) is measured in metres when applying the gravitational potential energy equation.
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