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What is the potential energy of a 2 kg mass at a height of 5 m? (g = 10 m/s²)

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Question: What is the potential energy of a 2 kg mass at a height of 5 m? (g = 10 m/s²)

Options:

  1. 100 J
  2. 50 J
  3. 20 J
  4. 10 J

Correct Answer: 100 J

Solution: 

Potential energy (PE) = mgh = 2 kg * 10 m/s² * 5 m = 100 J.

What is the potential energy of a 2 kg mass at a height of 5 m? (g = 10 m/s²)

Practice Questions

Q1
What is the potential energy of a 2 kg mass at a height of 5 m? (g = 10 m/s²)
  1. 100 J
  2. 50 J
  3. 20 J
  4. 10 J

Questions & Step-by-Step Solutions

What is the potential energy of a 2 kg mass at a height of 5 m? (g = 10 m/s²)
  • Step 1: Identify the mass (m). In this case, the mass is 2 kg.
  • Step 2: Identify the height (h). Here, the height is 5 m.
  • Step 3: Identify the acceleration due to gravity (g). It is given as 10 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 * 10 m/s² * 5 m.
  • Step 6: Calculate the result: 2 * 10 * 5 = 100.
  • Step 7: Conclude that the potential energy is 100 Joules (J).
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