Question

Find the resultant of two forces equal to 50 N and 30 N acting at an angle of 60°.

Answer 1

F=under square root of 50 square+ 30 square +2(50)(30)cos 60
=under square root of 2500+900+2 (1500) 1/2
=under square root of 3400+1500
=under square root of 4900
=70N