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EXAMPLE 10 : Two forces 40 Kg and 50 Kg act on a body as shown in the Figure 22. Find the resultant in magnitude and direction by algebraic method.

Solution:

From the given figure,

EXAMPLE 11 : Determine the resultant of two forces, 10 N and 5 N acting at an angle 1200 with each other.

Solution:

Using Laws of cosine to the shaded triangle,

Index

7.1 Scalers & Vectors
7.2 Algebra of Vectors
7.3 Representation of a vector in a plane
7.4 Dotor Scalar product
7.5 Polar Co-ordinates
Supplementary Problems

Chapter 8

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