Physics · Work, Power & Energy
Work through this past-paper style MCQ, then read the full explanation. Practice more physics questions on mMCQ with adaptive practice and topic analytics.
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?
- A
7.2 J
- B
3.6J
- C
120 J
- D
1200 J
B is correct.
Data:
Mass of 2 m chain = 4kg
Mass of 0.6m chain = 1.2 kg
Force = Mass x Accelaration due to gravity
F= 1.2 x 10
F= 12N
Work = Force x Distance
W= 12N x 0.3m
W= 3.6J
B is correct.
Data:
Mass of 2 m chain = 4kg
Mass of 0.6m chain = 1.2 kg
Force = Mass x Accelaration due to gravity
F= 1.2 x 10
F= 12N
Work = Force x Distance
W= 12N x 0.3m
W= 3.6J
Tagged under Physics · Work, Power & Energy · 2021