Question

If 100 N and 60 N forces make angle of 60° between them, find resultant force
(a) 100 N
(b) 140 N
(c) 160 N
(d) 200 N​

Answer 1

Answer:

I hope you have got your answer.

Explanation:

R=√(100)^2+(60)^2x100x60xcos60°

R=√10000+3600+2x100x60x1/2

R=√13600+6000

R=√19600

R=140 N

Answer 2

Answer:

Ans is option (b).

Explanation:

According to the question,

F1 = 100 N , F2 = 60 N

angle = 60°

we know that resultant

= √ F1^2 + F2^2 + 2•F1•F2• cos 60°

= √ 10000 +3600 + 2•100•60•1/2

= √19600

= 140 N.

therefore the resultant force is 140 N.