Home
Class 11
PHYSICS
ABC is an equilateral triangle with O as...

ABC is an equilateral triangle with `O` as its centre. `F_(1), F_(2)` and `F_(3)` represent three forces acting along the sides `AB, BC` and `AC` respectively. If the total about `O` is zero, then the magnitude of `F_(3)` is

A

`(F_(1)+F_(2))/(2)`

B

`2(F_(1)+F_(2))`

C

`(F_(1)+F_(2))`

D

`(F_(1)-F_(2))`

Text Solution

Verified by Experts

Promotional Banner

Similar Questions

Explore conceptually related problems

ABC is an equilateral triangle with O as its centre vec(F_(1)),vec(F_(2)) " and " vec(F_(3)) represent three forces acting along the sides AB, BC and AC respectively. If the torque about O is zero then the magnitude of vec(F_(3)) is

O is the centre of an equilateral triangle ABC . F_(1), F_(2) and F_(3) are the three forces acting along the sides AB, BC and AC respectively. What should be the value of F_(3) so that the total torque about O is zero?

D, E and F are the mid-points of the sides BC, CA and AB respectively of triangle ABC. Prove that: BDEF is a parallelogram.

D, E and F are the mid-points of the sides BC, CA and AB respectively of triangle ABC. Prove that: area of BDEF is half the area of Delta ABC.

In Delta ABC, D,E and F are mid-point of sides AB ,BC and AC respectively , Prove that AE and DF bisect each other.

D, E and F are the mid-points of the sides BC, CA and AB, respectively of an equilateral Delta ABC. Show that Delta DEF is also an equilateral triangle.

ABC is isosceles triangle, right angled at A. The resultant of the forces acting along vec(AB), vec(AC) with magnitudes 1/(AB) and 1/(AC) respectively is the force along vec(AD) , where D is the foot of the perpendicular from A on BC. The magnitude of the resultant is:

If D(3,-2) , E(-3,1) and F(4,-3) are the mid-points of the sides BC, CA and AB respectively of Delta ABC , find the co-ordinates of point A , B and C .

A block pulley arrangement is shown in the figure. If f_(1) and f_(2) represents frictional force acting on the block A and B respectively then choose the correct statement. (given g=10m//s^(2) )

Two forces F_(1)=1N and F_(2)=2N act along the lines x=0 and y=0, respectively. Then find the resultant of forces.