What is the potential energy of a 3 kg object at a height of 4 m?

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Question: What is the potential energy of a 3 kg object at a height of 4 m?

Options:

Correct Answer: 12 J

Solution:

Potential energy is calculated as PE = mgh, so PE = 3 kg × 9.8 m/s² × 4 m = 117.6 J.

What is the potential energy of a 3 kg object at a height of 4 m?

What is the potential energy of a 3 kg object at a height of 4 m?

Step 1: Identify the mass of the object. In this case, the mass (m) is 3 kg.
Step 2: Identify the height of the object above the ground. Here, the height (h) is 4 m.
Step 3: Use the acceleration due to gravity. The standard value for gravity (g) is approximately 9.8 m/s².
Step 4: Use the formula for potential energy (PE), which is PE = mgh.
Step 5: Plug in the values into the formula: PE = 3 kg × 9.8 m/s² × 4 m.
Step 6: Calculate the result: 3 × 9.8 = 29.4, then 29.4 × 4 = 117.6.
Step 7: The potential energy of the object is 117.6 Joules (J).

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