A 3 kg object is dropped from a height of 10 m. What is the potential energy at

Practice Questions

Q1
A 3 kg object is dropped from a height of 10 m. What is the potential energy at the top? (2022)
  1. 30 J
  2. 60 J
  3. 90 J
  4. 120 J

Questions & Step-by-Step Solutions

A 3 kg object is dropped from a height of 10 m. What is the potential energy at the top? (2022)
  • Step 1: Identify the mass of the object. In this case, the mass is 3 kg.
  • Step 2: Identify the height from which the object is dropped. Here, the height is 10 m.
  • Step 3: Identify the acceleration due to gravity (g). It is approximately 10 m/s².
  • Step 4: Use the formula for potential energy: Potential Energy = mass × g × height.
  • Step 5: Substitute the values into the formula: Potential Energy = 3 kg × 10 m/s² × 10 m.
  • Step 6: Calculate the potential energy: 3 × 10 × 10 = 300 J.
  • Potential Energy – The energy an object possesses due to its position in a gravitational field, calculated using the formula PE = mass × g × height.
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