What is the gravitational potential energy of a 10 kg object at a height of 5 m?

Practice Questions

Q1
What is the gravitational potential energy of a 10 kg object at a height of 5 m? (g = 9.8 m/s²)
  1. 49 J
  2. 98 J
  3. 245 J
  4. 490 J

Questions & Step-by-Step Solutions

What is the gravitational potential energy of a 10 kg object at a height of 5 m? (g = 9.8 m/s²)
  • Step 1: Identify the formula for gravitational potential energy, which is PE = mgh.
  • Step 2: Determine the values needed for the formula: mass (m) = 10 kg, gravitational acceleration (g) = 9.8 m/s², and height (h) = 5 m.
  • Step 3: Substitute the values into the formula: PE = 10 kg * 9.8 m/s² * 5 m.
  • Step 4: Calculate the multiplication: First, multiply 10 kg and 9.8 m/s² to get 98 kg*m/s².
  • Step 5: Now multiply 98 kg*m/s² by 5 m to get 490 kg*m²/s², which is equal to 490 Joules (J).
  • Step 6: Conclude that the gravitational potential energy of the object is 490 J.
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