Question: If a 2 kg object is lifted to a height of 5 m, what is the work done against gravity?
Options:
10 J
20 J
30 J
40 J
Correct Answer: 20 J
Solution:
Work done W = mgh = 2 kg * 9.81 m/s² * 5 m = 98.1 J.
If a 2 kg object is lifted to a height of 5 m, what is the work done against gra
Practice Questions
Q1
If a 2 kg object is lifted to a height of 5 m, what is the work done against gravity?
10 J
20 J
30 J
40 J
Questions & Step-by-Step Solutions
If a 2 kg object is lifted to a height of 5 m, what is the work done against gravity?
Work and Energy – The concept of work done against gravity, calculated using the formula W = mgh, where m is mass, g is acceleration due to gravity, and h is height.
Units of Measurement – Understanding the units involved in the calculation, specifically kilograms (kg), meters (m), and joules (J).
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