Que- A uniform chain of length L and mass m is held on a smooth table with one-fourth of its length hanging over the edge. If g is the acceleration due to gravity, find the work required to pull the hanging part on the table.(adsbygoogle = window.adsbygoogle || []).push({});

CHECK MY SOLUTION---------AND POINT OUT MY MISTAKE.

Weight of the hanging part of the chain=mg/4

Therefore, work done=(mg/4)(L/4)

=mgL/16..........Answer

I am getting this answer. But the correct answer is mgL/32.

Is there any role of center of mass in this question?

**Physics Forums | Science Articles, Homework Help, Discussion**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: Question on work,energy and power

**Physics Forums | Science Articles, Homework Help, Discussion**