Engineering Mechanics Questions

• The total time taken by a projectile to reach maximum height and to return back to the ground, is known as time of flight.
• The equivalent length of a simple pendulum which gives the same frequency as compound pendulum is
• The unit of angular acceleration is
• Work done is said to be zero, when
• During elastic impact, the relative velocity of the two bodies after impact is __________ the relative velocity of the two bodies before impact.
• Moment of inertia of a triangular section of base (b) and height (h) about an axis passing through its C.G. and parallel to the base, is
• The time of flight (t) of a projectile on an upward inclined plane is(where u = Velocity of projection, α = Angle of projection, and β = Inclination of the plane with the horizontal.)
• If the masses of both the bodies, as shown in the below figure, are reduced to 50 percent, then tension in the string will be
• The range of projectile on a downward inclined plane is __________ the range on upward inclined plane for the same velocity of projection and angle of projection.
• The angle of inclination of a vehicle when moving along a circular path __________ upon its mass.
• A body will begin to move down an inclined plane if the angle of inclination of the plane is __________ the angle of friction.
• If two bodies having masses m1 and m2 (m1>m2) have equal kinetic energies, the momentum of body having mass m1 is __________ the momentum of body having mass m2.
• Coefficient of friction is the ratio of the limiting friction to the normal reaction between the two bodies.
• Moment of inertia of a hollow circular section, as shown in the below figure about X-axis, is
• Moment of inertia of a circular section about an axis perpendicular to the section is
• The coefficient of restitution for elastic bodies is one.
• If a number of forces are acting at a point, theirresultant will be inclined at an angle θ with the horizontal, such that
• The distance, between the point of projection and the point where the projectile strikes the ground, is known as range.
• The above figure shows the two equal forces at right angles acting at a point. The value of force R acting along their bisector and in opposite direction is
• When a particle moves along a circular path with uniform velocity, there will be no tangential acceleration.