Engineering Mechanics Questions

• 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.
• Two blocks A and B of masses 150 kg and 50 kg respectively are connected by means of a string as shown in the below figure. The tension in all the three strings __________ be same.
• In collision of elastic bodies, the coefficient of restitution is the ratio of the relative velocity after impact to the relative velocity before impact.
• The moment of inertia of a rectangular section 3cm wide and 4cm deep about X-X axis is
• The three forces of 100 N, 200 N and 300 N have their lines of action parallel to each other but act in the opposite directions. These forces are known as