Statistics Test...

Weights 2, 3, 4 and 5 lbs are suspended from a uniform lever 6 ft long at distances of 1, 2, 3 and 4 ft from one end. If the weight of the lever is 11 lbs, then the distance of the point at which it will balance from this end is

If the line of action of the resultant of two forces P and Q divides the angle between them in the ratio 1 : 2, then the magnitude of the resultant is

P and Q are like parallel forces. If P is moved parallel to itself through a distance x, then the resultant of P and Q moves through a distance

At what height from the base of a vertical pillar, a string of length 6 metre be tied, so that man sitting on the ground and pulling the other end of the string has to apply minimum force to overturn the pillar

A beam whose centre of gravity divides it into two portions a and b is placed inside a smooth horizontal sphere. If θ be its inclination to the horizon in the position of equilibrium and 2α be the angle subtended by the beam at the centre of the sphere, then

The resultant of two forces P and Q is R. If Q is doubled, R is doubled and if Q is reversed, R is again doubled. Ifthe ratio P² : Q²: R² = 2 : 3 : x, then x is equal to

The resultant of P and Q is R. If P is reversed, Q remaining the same, the resultant becomes R\'. If R is perpendicular to R\', then

What will be that force when applying along any inclined plane will stop 10 kilogram weight, it is given that force, reaction of plane and weight of body are in arithmetic series