Question

Rope of length 8m and linear density 0.5kg/m is lying on horizontal smooth floor.It is pulled by force of 12 N.Tension at midpoint would be
1)12N 2)8N 3)6N 4)4N

Answer 1

Correct option (3)

mass of rope 8*0.5= 4Kg

F=12N a=12/4= 3m/s2

mass of rope remaining after mid point 4*0.5= 2Kg

tnsion at mid pt = 2*3=6N