The minimum number of forces of equal magnitude in a plane that can keep a particle in equilibrium is

The minimum number of unequal forces in a plane that can keep a particle in equilibrium is

The minimum number of vectors of equal magnitude required to produce zero resultant, is

The minimum number of vectors of equal magnitude required to produce a zero resultant is :

Minimum numbar of vectors of unequal magnitudes which can give zore resultant are

What is the minimum number of forces acting on an object in a plane that can produce a zero resultant force ?

Three forces of magnitude 30, 60 and P Newton acting on a particle and particle is in equilibrium. If the angle between the first two forces is 60^(@) , the value of P is

The minimum number of points of intersection of three lines in a plane is

Three positive charges of equal magnitude q are placed at the vertics of and equilatral triangle of side l. How can the system of charges be palced in equilibrium?

Assertion : A body subjected to three concurrent forces cannot be in equilibrium. Reason : If large number of concurrent forces acting on the same point, then the point will be in equilibrium, if sum of all the forces is equal to zero.

A uniform solid sphere of mass 1 kg and radius 10 cm is kept stationary on a rough inclined plane by fixing a highly dense particle at B . Incination of plane is 37^@ with horizontal and AB is the diameter of the sphere which is parallel to the plane, as show in figure. Calculate a. mass of the particle fixed at B b. minimum required coefficient of friction between sphere and plane to keep sphere in equilibrium.