Applied Mechanics and Graphic Statics MCQs

The centre of gravity of a plane lamina will not be at its geometrical centre if it is a

On a mass ‘m’ describing a circular path of radius ‘r’, the centrifugal force

The condition of equilibrium for any system of forces in a plane is

The force acting on a point on the surface of a rigid body may be considered to act

A 2 m long ladder rests against a wall and makes an angle of 30° with the horizontal floor. Where will be the instantaneous center of rotation when the ladder starts slipping ? i. 1.0 in from the wall ii. 1.732 m from the wall iii. 1.0 m above the floor iv. 1.732 m above the floor The correct answer is

If a body is lying on a plane whose inclination with the horizontal is less than the angle of friction, then i. a force is required to move the body upwards ii. a force is required to move the body downward iii. the body will not be in equilibrium The correct answer is

The torque produced by a force depends on i. the magnitude of the force ii. the direction of the force iii. the point of application of the force relative to origin The correct answer is

Select the correct statement

The resultant of two forces P and Q is R. If Q is doubled, the new resultant is perpendicular to P. Then,