A 10 kg object is lifted to a height of 10 m. How much work is done against grav
Practice Questions
Q1
A 10 kg object is lifted to a height of 10 m. How much work is done against gravity?
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Questions & Step-by-Step Solutions
A 10 kg object is lifted to a height of 10 m. How much work is done against gravity?
Correct Answer: 980 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 10 m.
Step 3: Identify the acceleration due to gravity. This is approximately 9.8 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 * 9.8 m/s² * 10 m.
Step 6: Calculate the result: W = 10 * 9.8 * 10 = 980 J.
Work and Energy – The work done against gravity is calculated using the formula W = mgh, where m is mass, g is the acceleration due to gravity, and h is the height.
Potential Energy – The work done in lifting an object is equal to the increase in its gravitational potential energy.
