A uniform chain of length 4m and mass 4 kg is placed on a smooth table with one-fourth of its length hanging over the edge. The work that has to be done to pull the whole chain back onto the table is

see full answer

Talk to JEE/NEET 2025 Toppers - Learn What Actually Works!

Real Strategies. Real People. Real Success Stories - Just 1 call away

An Intiative by Sri Chaitanya

5 J

2.5 J

7.5 J

10 J

answer is A.

(Unlock A.I Detailed Solution for FREE)

Ready to Test Your Skills?

Check your Performance Today with our Free Mock Test used by Toppers!

Take Free Test

Detailed Solution

m = Mass of the hanging part=4×14kg=1 kgDisplacement of c.g. h = 0.5 mwork done =mgh=1×10×0.5 J=5 J

Watch 3-min video & get full concept clarity