Question

In an equilateral triangle ABC, AL, BM and CN are medians. Forces along BC and BA
represented by them will have a resultant represented by
(C) 2 CN
(A) 2 AL
(B) 2 BM
(D) AC​

Answer 1

Answer:

(B) 2 BM is the correct answer.

Explanation:

Given data:

equilateral triangle ABC, AL, BM and CN are medians. Forces along BC and BA

represented by them.

To find force which willl have a resultant represented by =?

Solution

Consider equilateral triangle ABC

AL, BM and CN are medians.

Forces along BC and BA

represented by say F and F' respectively.

From figure we get to know that,

BA+BC=BD

BA+BC = 2BM

Thus, the resultant of the forces will be given by 2BM.

Answer 2

Answer:

(B) 2BM

Explanation:

Here ABC is an equilateral triangle in which AL,BM and CN are the median.  

Suppose, force represented by BC=F and force represented by BA=F'

Then the resultant of these forces is represented by R which is equal to 2BM.