Question

A matallic chain 1m long lies on a horizontal surface of table.The chain starts sliding on the table if 25cm(or more of it)hangs over the edge of a table.The correct value of the coefficient of friction between the table and chain?

Answer 1

Answer:

Let m be the mass for 1 m length chain then 25 cm length the mass would be: = > m/4

balacncing the forces we get,

f = mg/4.

u*(3m/4)*g = mg/4

u= 1/3

Hope it helps!!