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A 4 kg object is lifted to a height of 3 m. What is the change in gravitational
A 4 kg object is lifted to a height of 3 m. What is the change in gravitational potential energy?
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A 4 kg object is lifted to a height of 3 m. What is the change in gravitational potential energy?
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Change in potential energy = mgh = 4 kg × 9.8 m/s² × 3 m = 117.6 J.
Questions & Step-by-step Solutions
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Q
Q: A 4 kg object is lifted to a height of 3 m. What is the change in gravitational potential energy?
Solution:
Change in potential energy = mgh = 4 kg × 9.8 m/s² × 3 m = 117.6 J.
Steps: 7
Show Steps
Step 1: Identify the mass of the object. In this case, the mass (m) is 4 kg.
Step 2: Identify the height the object is lifted to. Here, the height (h) is 3 m.
Step 3: Identify the acceleration due to gravity. This is approximately 9.8 m/s².
Step 4: Use the formula for gravitational potential energy change: Change in potential energy = mgh.
Step 5: Substitute the values into the formula: Change in potential energy = 4 kg × 9.8 m/s² × 3 m.
Step 6: Calculate the result: 4 × 9.8 = 39.2, then 39.2 × 3 = 117.6.
Step 7: The change in gravitational potential energy is 117.6 Joules (J).
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