Question

The resultant of two forces cannot be less than (1) Average of 2 forces (2) Algebraic sum of two forces (3) difference q the two forces (4) None No Spam Other wise Answer will be deleted ​

Answer 1

Precipitation is water released from clouds in the form of rain, freezing rain, sleet, snow, or hail. It is the primary connection in the water cycle that provides for the delivery of atmospheric water to the Earth. Most precipitation falls as rain.

Answer 2

Answer:

The correct answer is option (3) difference of the two forces.

Concept:

Resultant of two vectors. (Addition of two vectors using triangle law of vector addition).

Find:

The minimum value of the resultant of two forces.

Explanation:

Let one force be represented by vector $F_1$ and other force is represented by vector $F_2$ and their resultant be by vector F.

Let the angle between two forces be $\theta$.

Accordingly,

$F^2 = F_1^2 + F_2^2 + 2F_1F_2cos\theta$

Resultant force, $F = \sqrt{F_1^2 + F_2^2 + 2F_1F_2cos\theta}$      --------- (i)

As we know, $-1\leq cos\theta\leq 1$

So, for the minimum value of resultant $cos\theta$ should be equal to -1.

Putting value of cos $\theta$ = -1 in equation (i), we get

$F = \sqrt{F_1^2+F_2^2 - 2F_1F_2}$

$F = \sqrt{(F_1-F_2)^{2} }$

$F = F_1-F_2$

i.e., the minimum value of resultant of two forces is equal to the difference of two forces.

Hence, the resultant of two forces cannot be less than the difference of two forces.

So, option (3) is correct.

#SPJ3