Laws Of Motion Question 1
Question 1 - 2024 (01 Feb Shift 1)
Consider a block and trolley system as shown in figure. If the coefficient of kinetic friction between the trolley and the surface is 0.04 , the acceleration of the system in $ms^{-2}$ is :
(Consider that the string is massless and unstretchable and the pulley is also massless and frictionless):
(1) 3
(2) 4
(3) 2
(4) 1.2
Show Answer
Answer: (3)
Solution:
$f _k=\mu N=0.04 \times 20 g=8$ Newton
$a=\frac{60-8}{26}=2 m / s^{2}$
