What is the angle between two forces of 2N and 3N having resultant as 4N?
CLASS - XI PHYSICS (Kinematics)
Answers
Answered by
92
R2 =P2 +Q2 + 2 PQ cos A
Where R = resultant , P and Q are vectors , A is angle
between the 2 vectors] now,
(4N)2 = (2N)2 + (3N)2 + 2 .
2N . 3 N . cos A
16N2 = 4N2 + 9N2 + 12N2.
Cos A
16N2- 13 N2 = 12N2 cos A
3N2 / 12N2 = cos A
¼ = cos A
A = cos-1 (1/4)
A = 75.52248781
Answered by
1
Answer:
I hope this answef helps you.
Attachments:
Similar questions