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If a 2 kg object is lifted to a height of 3 m, what is the potential energy gain
If a 2 kg object is lifted to a height of 3 m, what is the potential energy gained by the object? (g = 9.8 m/s²)
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Practice Questions
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Q1
If a 2 kg object is lifted to a height of 3 m, what is the potential energy gained by the object? (g = 9.8 m/s²)
58.8 J
19.6 J
29.4 J
39.2 J
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Potential Energy (PE) = mgh = 2 kg × 9.8 m/s² × 3 m = 58.8 J.
Questions & Step-by-step Solutions
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Q
Q: If a 2 kg object is lifted to a height of 3 m, what is the potential energy gained by the object? (g = 9.8 m/s²)
Solution:
Potential Energy (PE) = mgh = 2 kg × 9.8 m/s² × 3 m = 58.8 J.
Steps: 7
Show Steps
Step 1: Identify the mass of the object. In this case, the mass (m) is 2 kg.
Step 2: Identify the height to which the object is lifted. Here, the height (h) is 3 m.
Step 3: Identify the acceleration due to gravity. It is given as g = 9.8 m/s².
Step 4: Use the formula for potential energy (PE), which is PE = mgh.
Step 5: Substitute the values into the formula: PE = 2 kg × 9.8 m/s² × 3 m.
Step 6: Calculate the result: 2 × 9.8 = 19.6, then 19.6 × 3 = 58.8.
Step 7: The potential energy gained by the object is 58.8 Joules (J).
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