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

Practice Questions

Q1
What is the gravitational potential energy of a 2 kg mass at a height of 5 m? (g = 9.8 m/s²)
  1. 19.6 J
  2. 39.2 J
  3. 49 J
  4. 9.8 J

Questions & Step-by-Step Solutions

What is the gravitational potential energy of a 2 kg mass at a height of 5 m? (g = 9.8 m/s²)
  • Step 1: Identify the mass (m) of the object. In this case, it is 2 kg.
  • Step 2: Identify the height (h) above the ground. Here, it is 5 m.
  • Step 3: Identify the acceleration due to gravity (g). It is given as 9.8 m/s².
  • Step 4: Use the formula for gravitational potential energy: PE = m * g * h.
  • Step 5: Substitute the values into the formula: PE = 2 kg * 9.8 m/s² * 5 m.
  • Step 6: Calculate the result: 2 * 9.8 * 5 = 98 J.
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