Physics

Problem

A horizontal force on a

5\,\text{kg}

block starts from zero and increases uniformly at the rate

5\,\text{N s}^{-1}

(that is,

F=5t

). The coefficient of static friction between the block and the table is

0.5

. After how much time will the block begin to slide? (Take

g=10\,\text{m s}^{-2}

) a)

2.5\,\text{s}

4.0\,\text{s}

5.0\,\text{s}

10\,\text{s}