Kinematics Question 31

Question: Which pair of the following forces will never give resultant force of 2 N [HP PMT 1999]

Options:

A) 2 N and 2 N

B) 1 N and 1 N

C) 1 N and 3 N

D) 1 N and 4 N

Show Answer

Answer:

Correct Answer: D

Solution:

If two vectors A and B are given then Range of their resultant can be written as $ (A-B)\le R\le (A+B) $ .

i.e. $ {R _{\max }}=A+B $ and $ {R _{\min }}=A-B $

If B = 1 and A = 4 then their resultant will lies in between 3N and 5N. It can never be 2N



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