Question

two forces whose magnituxe are at the ratio 3:5 give a resulatant of 35n if the angle of inclination is 60 degree find the magnitude of each force​

Answer 1

Answer:

A and B be the two forces.

Then A=3x,B=5x;R=28N and θ=60

o

.

Dividing A by B,

B

A

=

5

3

We know that R=

a

2

+B

2

+2ABcosθ

⇒28=

(3x)

2

+(5x)

2

+2(3x)(5x)cos60

o

=

9x

2

+25x

2

+15x

2

=7x

⇒x=

7

28

=4

Hence, forces are A=3×4=12N,B=5×4=20N

Explanation:

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