Question

Find the size of the resultant of two forces of 5N and 12N acting at 90 degree

Answer 1

Answer:-

Given:

Magnitude of first force (A) = 5 N

Magnitude of second force (B) = 12 N

Angle between them (∅) = 90°.

We know that,

Resultant force(R) = √(A² + B² + 2AB*cos ∅)

→ R = √(5² + (12)² + 2 * 5 * 12 *Cos 90°)

→ R = √(25 + 144 + 120 * 0)

→ R = √169

→ R = 13 N

Therefore, the resultant force will be 13 N.

Additional Information:-

Vectors:

• The physical quantities which are expressed in both magnitude as well as direction are called Vectors.

• Vectors are generally written with a symbol and arrow head on it.

• For example, Velocity is a vector quantity. It is denoted by V ^ (→).

• They cannot be added , subtracted and multiplied by ordinary laws of algebra.

• There are different types of vectors based their magnitude and direction.