Answer:Okay, let's break down this problem to find the work done in lifting the textbook. Understanding the Concepts: - Work: In physics, work is done when a force causes an object to move a certain distance. The formula for work is:- Work (W) = Force (F) x Distance (d)- Force of Gravity: The force we need to overcome to lift the textbook is the force of gravity. We calculate this with:- Force (F) = mass (m) x acceleration due to gravity (g)- The acceleration due to gravity (g) is approximately 9.8 m/s². Let's Calculate: 1. Force of Gravity: - F = (2 kg) * (9.8 m/s²) = 19.6 N (Newtons)2. Work Done: - W = (19.6 N) * (2.10 m) = 41.16 J (Joules) Answer: The work done in lifting the textbook to the shelf is 41.16 Joules.
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