Engineering Mechanics Questions

• If the resultant of a number of forces acting on a body is zero, then the body will not be in equilibrium.
• Moment of inertia is the
• Moment of inertia of a hollow circular section, as shown in the below figure about an axis perpendicular to the section, is __________ than that about X-X axis.
• The law of the machine is(where P = Effort applied to lift the load, m = A constant which is equal to the slope of the line, W = Load lifted, and C = Another constant which represents the machine friction.)
• The centre of gravity a T-section 100 mm x 150 mm x 50 mm from its bottom is
• The moment of inertia of a solid sphere of mass m and radius r is
• The acceleration of a body sliding down an inclined surface is
• The friction experienced by a body, when at rest, is known as
• Moment of inertia of a triangular section of base (b) and height (h) about an axis passing through its vertex and parallel to the base, is __________ than that passing through its C.G. and parallel to the base.
• Coplaner non-concurrent forces are those forces which __________ at one point, but their lines of action lie on the same plane.
• The velocity ratio of a simple wheel and axle with D and d as the diameters of effort wheel and load axle, is
• One kg force is equal to
• In order to determine the effects of a force, acting on a body, we must know
• If a number of forces are acting at a point, their resultant is given by
• A lifting machine lifts a load of 1000N through a distance of 0.2 m by means of an effort of 200N through a distance of 1m. This machine is an ideal one.
• A ladder is resting on a rough ground and leaning against a smooth vertical wall. The force of friction will act
• The efficiency of a lifting machine is the ratio of
• The wheels of a moving car possess
• Non-coplaner non-concurrent forces are those forces which
• If the efficiency of a lifting machine is kept constant, its velocity ratio is __________ propotional to its mechanical advantage.