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?
Text Solution
Verified by ExpertsThe correct answer is:
B
Mass per unit length
= 
= 
= 2 kg/m
The mass of 0.6 m of chain
= 0.6 × 2 = 1.2 kg
The centre of mass of hanging part
= 
= 0.3 m
Hence, work done in pulling the chain on the table
W = mgh
= 1.2 × 10 × 0.3
= 1.2 × 10 × 0.3
= 3. 6 J
Prepare Smarter with CGP Edu
Get practice questions, solutions, and test series in one place.
Write a Review
Share your experience with this question and solution.
Commentary
Send your comment, doubt, correction, or feedback to admin.
Similar Questions
Explore conceptually related problems
Two uniform solid spheres are placed at some distance. The centre of mass of system –
Where will be the centre of mass on combining two masses m and M(M > m) :
In the HCl molecule, the separation between the nuclei of the two atoms is about 1.27 Å (1 Å = 10 –…
The distance between the carbon atom and the oxygen atom in a carbon monoxide molecule is 1.1 Å. Gi…
Three identical metal balls each of radius r are placed touching each other on a horizontal surface…
Centre of mass is a point