Question

A uniform metal chain is placed on a rough table such that one end of the chain hangs down over the edge of the table. When two-thirds of its chain length hangs over the edge the chain start sliding. Then the coefficient of static friction is:

Options

• 1

• 2

• 3

• 4

Answer 1

2

Explanation:

µ_s = `"Length of chain hanging from the table"/"Length of chain lying on the table"`

µ_s = `(2/3)/(1 - 2/3)` = 2