A 10 kg object is lifted to a height of 5 m. What is the work done against gravi
Practice Questions
Q1
A 10 kg object is lifted to a height of 5 m. What is the work done against gravity? (Take g = 10 m/s²)
50 J
100 J
150 J
200 J
Questions & Step-by-Step Solutions
A 10 kg object is lifted to a height of 5 m. What is the work done against gravity? (Take g = 10 m/s²)
Correct Answer: 500 J
Step 1: Identify the mass of the object. In this case, the mass (m) is 10 kg.
Step 2: Identify the height to which the object is lifted. Here, the height (h) is 5 m.
Step 3: Identify the acceleration due to gravity. We are given that g = 10 m/s².
Step 4: Use the formula for work done against gravity, which is W = mgh.
Step 5: Substitute the values into the formula: W = 10 kg × 10 m/s² × 5 m.
Step 6: Calculate the result: W = 10 × 10 × 5 = 500 J.
Work Done Against Gravity – The work done against gravity is calculated using the formula W = mgh, where m is mass, g is acceleration due to gravity, and h is height.
