Laws Of Motion Question 54
Question: What is the maximum value of the force F such that the block shown in the arrangement, does not move [IIT-JEE Screening 2003]
Options:
A) 20 N
B) 10 N
C) 12 N
D) 15 N
Show Answer
Answer:
Correct Answer: A
Solution:
$ f=\mu R $
$ F\cos 60{}^\circ =\mu (W+F\sin 60{}^\circ ) $
Substituting $ \mu =\frac{1}{2\sqrt{3}} $ & $ W=10\sqrt{3} $ we get $ F=20N $
