Question detail
An object with a mass of 5 kg is raised to a height of 10 m. Calculate its gravitational potential energy. Assume the gravitational field strength is 9.8 N/kg.
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
An object with a mass of 5 kg is raised to a height of 10 m. Calculate its gravitational potential energy. Assume the gravitational field strength is 9.8 N/kg.
Answer
The gravitational potential energy is 490 J.
Explanation
This question assesses the student's ability to apply the gravitational potential energy formula in a practical scenario. It involves substituting the given values into the formula and performing the calculation to find the energy in joules. This answer is linked to Changes in energy because it applies the learning objective: Identify gravitational potential energy in joules, mass in kilograms, gravitational field strength in newtons per kilogram and height in metres.. It shows the Physics relationship clearly and keeps energy, power, work done and efficiency terms distinct where they appear.
Common mistake
Confusing Units of Measurement
Students often confuse the units for gravitational potential energy, mass, and height, mixing up joules, kilograms, and meters.
Always remember that gravitational potential energy is measured in joules (J), mass in kilograms (kg), and height in meters (m). Double-check your units when performing calculations.
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