Engineering Mechanics Questions

• The force, by which the body is attracted, towards the centre of the earth, is called
• The velocity ratio for the second system of pulleys is n.
• Efficiency of a screw jack is given by(where α = Helix angle, and φ = Angle of friction.)
• The velocity ratio of a first system of pulleys with 4 pulleys is
• According to parallel axis theorem, the moment of inertia of a section about an axis parallel to the axis through centre of gravity (i.e. IP) is given by(where, A = Area of the section, IG = Moment of inertia of the section about an axis passing through its C.G., and h = Distance between C.G. and the parallel axis.)
• The moment of inertia of a thin spherical shell of mass m and radius r, about its diameter is
• The linear velocity of a body rotating at ω rad / s along a circular path of radius r is given by
• The ideal angle of banking provided on the curves on roads depends upon
• The time taken by a particle for one complete oscillation is known as periodic time.
• The power developed by a body acted upon by a torque T newton metre (N - m) and revolving at ω radian/s is given by
• The moment of inertia of a thin disc of mass m and radius r, about an axis through its centre of gravity and perpendicular to the plane of the disc is
• A non-reversible machine is also called a self-locking machine.
• When two elastic bodies collide with each other,
• The resultant of two equal forces P making an angle θ, is given by
• The maximum velocity of a particle moving with simple harmonic motion is
• A machine which is not capable of doing any work in the reversed direction, after the effort is removed, is called a reversible machine.
• The forces which do not meet at one point and their lines of action do not lie on the same plane are known as
• Moment of inertia of a rectangular section having width (b) and depth (d) about an axis passing through its C.G. and parallel to the width (b), is
• When a person, on a bicycle, drives round a curve, he has to lean __________ to maintain equilibrium.
• The horizontal range of a projectile (R) is given by