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A 3 kg object is lifted to a height of 4 m. What is the gravitational potential
A 3 kg object is lifted to a height of 4 m. What is the gravitational potential energy gained? (2023)
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A 3 kg object is lifted to a height of 4 m. What is the gravitational potential energy gained? (2023)
120 J
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90 J
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Potential Energy (PE) = m * g * h = 3 kg * 9.8 m/s^2 * 4 m = 117.6 J (approximately 120 J)
Questions & Step-by-step Solutions
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Q: A 3 kg object is lifted to a height of 4 m. What is the gravitational potential energy gained? (2023)
Solution:
Potential Energy (PE) = m * g * h = 3 kg * 9.8 m/s^2 * 4 m = 117.6 J (approximately 120 J)
Steps: 7
Show Steps
Step 1: Identify the mass of the object. In this case, the mass (m) is 3 kg.
Step 2: Identify the height to which the object is lifted. Here, the height (h) is 4 m.
Step 3: Identify the acceleration due to gravity (g). The standard value is approximately 9.8 m/s².
Step 4: Use the formula for gravitational potential energy (PE), which is PE = m * g * h.
Step 5: Substitute the values into the formula: PE = 3 kg * 9.8 m/s² * 4 m.
Step 6: Calculate the result: 3 * 9.8 * 4 = 117.6 J.
Step 7: Round the answer if necessary. Here, 117.6 J is approximately 120 J.
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