What is the gravitational potential energy of a 2 kg mass at a height of 5 m?

Practice Questions

Q1
What is the gravitational potential energy of a 2 kg mass at a height of 5 m?
  1. 10 J
  2. 20 J
  3. 30 J
  4. 40 J

Questions & Step-by-Step Solutions

What is the gravitational potential energy of a 2 kg mass at a height of 5 m?
  • Step 1: Identify the formula for gravitational potential energy, which is U = mgh.
  • Step 2: Identify the values needed for the formula: mass (m) = 2 kg, height (h) = 5 m, and gravitational acceleration (g) = 9.8 m/s^2.
  • Step 3: Substitute the values into the formula: U = 2 kg * 9.8 m/s^2 * 5 m.
  • Step 4: Calculate the multiplication: 2 kg * 9.8 m/s^2 = 19.6 kg*m/s^2.
  • Step 5: Now multiply that result by the height: 19.6 kg*m/s^2 * 5 m = 98 J.
  • Step 6: Conclude that the gravitational potential energy is 98 Joules.
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