A uniform chain of length 2 m is kept on a table such that a length of 60 cm hangs freely from the edge of the table. The total mass of the chain is 4 kg. What is the work done in pulling the entire chain on the table?
Correct answer: B. 3.6J
- A. 7.2 J
- B. 3.6J
- C. 120 J
- D. 1200 J
Explanation
B is correct.Data:Mass of 2 m chain = 4kgMass of 0.6m chain = 1.2 kgForce = Mass x Accelaration due to gravityF= 1.2 x 10F= 12NWork = Force x DistanceW= 12N x 0.3mW= 3.6J
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