Applied Mechanics Questions

• The c.g. of the shaded area of the below figure whose curve OM is a parabola from y-axis, is
• When a body in equilibrium undergoes an infinitely small displacement, work imagined to be done, is known as
• The equation of motion of a particle starting from rest along a straight line is x = t3 - 3t2 + 5. The ratio of the accelerations after 5 sec and 3 sec will be
• If the gravitational accelerational at any place is doubled, the weight of a body, will
• The locus of the instantaneous centre of a moving rigid body, is
• A load of 500 kg was lifted through a distance of 13 cm. by an effort of 25 kg which moved through a distance of 650 cm. The efficiency of the lifting machine is
• Two forces act an angle of 120°. If the greater force is 50 kg and their resultant is perpendicular to the smaller force, the smaller force is
• The vertical reaction at the support A of the structure shown in below figure, is
• Parallelogram Law of Forces states, "if two forces acting simultaneously on a particle be represented in magnitude and direction by two adjacent sides of a parallelogram, their resultant may be represented in magnitude and direction by
• Engineer's units of force, is
• To attain the synchronous orbit, the launch of a satellite, is done from a place
• The tension in a cable supporting a lift
• The angle which an inclined surface makes with the horiontal when a body placed on it is on the point of moving down, is called
• The Law of Polygon of Forces states that
• If three rigid rods are hinged together to form a triangle and are given rotary as well as translatory motion, the number of instantaneous centres of the triangle, will be
• The masses of two balls are in the ratio of 2 : 1 and their respective velocities are in the ratio of 1 : 2 but in opposite direction before impact. If the coefficient of restitution is , the velocities of separation of the balls will be equal to
• A string of length 90 cm is fastened to two points A and B at the same level 60 cm apart. A ring weighing 120 g is slided on the string. A horizontal force P is applied to the ring such that it is in equilibrium vertically below B. The value of P is :
• The maximum velocity of a body vibrating with a simple harmonic motion of amplitude 150 mm and frequency 2 vibrations/sec, is
• The reaction at the support A of the beam shown in below figure is
• The centre of gravity of a triangle is at the point where three