A flat car is given an acceleration `a_(0)=2m//s^(2)` starting from rest. A cable is connected to a crate of weight `50kg` as shown whose other end is attached to a fixed support on ground. Neglect friction between the floor and the car wheels and also the mass of the pulley. Calculate corresponding tension in th cable if `mu=0.30` between the crate and the floor or the car.

Options

A. 350 N
B. 250 N
C. 300 N
D. zero

Answer

D

Explanation

`f_(r_("max"))=0.3(50g)=150N rArr a_("car")=2m//s^(2)`
`"Required fricition force "=50(2)=100 N lt "fr"_("max")`
so there will be no tension