Applied Mechanics Questions

• The acceleration of a train starting from rest at any instant is where V is the velocity of the train in m/sec. The train will attain a velocity of 36 km/hour after travelling a distance of
• A marble ball is rolled on a smooth floor of a room to hit a wall. If the time taken by the ball in returning to the point of projection is twice the time taken in reaching the wall, the coefficient of restitution between the ball and the wall, is
• The apparent weight of a man in a moving lift is less than his real weight when it is going down with
• A body A of mass 6.6 kg which is lying on a horizontal platform 4.5 m from its edge is connected to the end of a light string whose other end is supporting a body of mass 3.2 kg as shown in below figure. If the friction between the platform and the body A is 1/3, the acceleration is
• A number of forces acting simultaneously on a particle of a body
• P is the force acting on a body whose mass is m and acceleration is f. The equation P - mf = 0, is known as
• The necessary condition of equilibrium of a body, is :
• Principle of Transmissibility of Forces states that, when a force acts upon a body, its effect is
• If G is the Gauge of track, v is velocity of the moving vehicle, g is the acceleration due to gravity and r is the radius of a circular path, the required superelevation is
• A 49 kg lady stands on a spring scale in an elevator. During the first 5 sec, starting from rest, the scale reads 69 kg. The velocity of the elevator will be
• Two particles have been projected at angles 64° and 45° to the horizontal. If the velocity of projection of first is 10 m/sec, the velocity of projection of the other for equal horizontal ranges is
• Time of flight of a projectile on a horizontal plane, is
• Pick up the incorrect statement from the following :
• The moment of inertia of a hollow circular section whose external diameter is 8 cm and internal diameter is 6 cm, about centroidal axis, 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 velocity ratio of the lifting machine is
• The centre of gravity of the trapezium as shown in below figure from the side is at a distance of
• A satellite is said to move in a synchronous orbit if it moves at an altitude of 36, 000 km with a maximum velocity of about
• For perfectly elastic bodies, the value of coefficient of restitution is
• A trolley wire weighs 1 kg per metre length. The ends of the wire are attached to two poles 20 m apart. If the horizontal tension is 1000 kg, the central dip of the cable is
• The moment of inertia of the shaded portion of the area shown in below figure about the X-axis, is