If a 5 kg object is lifted to a height of 10 m, what is the potential energy gai

Practice Questions

Q1
If a 5 kg object is lifted to a height of 10 m, what is the potential energy gained by the object? (g = 9.8 m/s²)
  1. 490 J
  2. 980 J
  3. 245 J
  4. 2450 J

Questions & Step-by-Step Solutions

If a 5 kg object is lifted to a height of 10 m, what is the potential energy gained by the object? (g = 9.8 m/s²)
Correct Answer: 490 J
  • Step 1: Identify the mass of the object. In this case, the mass is 5 kg.
  • Step 2: Identify the height to which the object is lifted. Here, the height is 10 m.
  • Step 3: Identify the acceleration due to gravity (g). It is given as 9.8 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 = 5 kg × 9.8 m/s² × 10 m.
  • Step 6: Calculate the result: 5 × 9.8 × 10 = 490 J.
  • Step 7: Conclude that the potential energy gained by the object is 490 Joules.
  • Potential Energy – The energy possessed by an object due to its position in a gravitational field, calculated using the formula PE = mass × g × height.
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