If a 5 kg object is lifted to a height of 10 m, what is the work done against gr

Practice Questions

Q1
If a 5 kg object is lifted to a height of 10 m, what is the work done against gravity? (g = 9.8 m/s²)
  1. 49 J
  2. 98 J
  3. 490 J
  4. 980 J

Questions & Step-by-Step Solutions

If a 5 kg object is lifted to a height of 10 m, what is the work done against gravity? (g = 9.8 m/s²)
Correct Answer: 490 J
  • Step 1: Identify the mass of the object. In this case, the mass (m) is 5 kg.
  • Step 2: Identify the height to which the object is lifted. Here, the height (h) is 10 m.
  • Step 3: Identify the acceleration due to gravity. The value of g is 9.8 m/s².
  • Step 4: Use the formula for work done against gravity, which is Work = mgh.
  • Step 5: Substitute the values into the formula: Work = 5 kg × 9.8 m/s² × 10 m.
  • Step 6: Calculate the result: 5 × 9.8 × 10 = 490 J.
  • Step 7: Conclude that the work done against gravity is 490 Joules.
  • Work Done Against Gravity – Work is calculated using the formula W = mgh, where W is work, m is mass, g is acceleration due to gravity, and h is height.
Soulshift Feedback ×

On a scale of 0–10, how likely are you to recommend The Soulshift Academy?

Not likely Very likely