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=μR

Fcos⁡60∘=μ(W+Fsin⁡60∘)

Substituting μ=123 & W=103 we get F=20N

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