Question

Two forces of magnitude 3 units and 5 units act at 60degres with each other what is the magnitude of their resultant

Answer 1

Answer:

Magnitude of their resultant vector is 7 units.

Explanation:

Let :

A= 3 units

B= 5 units

theta =60°

R =√A^2+B^2 +2AB cos theta

=√ (3)^2 +(5)^2+ 2(3)(5) cos 60°

=√9+25+30(1/2)

=√34+15

=√49

=7

Therefore, magnitude of their resultant is 7 units

Answer 2

Explanation:

see the upper attachment !!hope it helps you :)) !!