Question

Q11. Triangle law of forces states that if two forces acting at a point are represented in magnitude and direction by the two
sides of the triangle taken in order, then their resultant is given by
(A) Third side of the triangle taken in the same order
O (B) Third side of the triangle taken in the opposite order
(C) Sum of the two forces acting
(D) Difference of two forces acting​

Answer 1

Explanation:

B) third side of the triangle taken in the opposite order

Answer 2

According to the Triangle Law of Forces, the resultant is given by (B) Third side of the triangle taken in the opposite order.

• Force is a vector quantity. So, its addition will follow the rule of vector addition.

• Here, the Triangle Law of addition will also be applied.

If two forces acting at a point are represented in magnitude and direction by the two sides of the triangle are taken in an order, then their resultant, i.e., sum of the two vectors are given by the third side of the triangle taken in the opposite order, i.e., magnitude and direction.