The mechanical advantage of a lifting machine is the ratio of
Static friction is always __________ dynamic friction.
A body will begin to move down an inclined plane if the angle of inclination of the plane is __________ the angle of friction.
When a particle moves along a circular path with uniform velocity, there will be no tangential acceleration.
The bodies which rebound after impact are called
The maximum frictional force, which comes into play, when a body just begins to slide over the surface of the other body, is known as
The centre of gravity of an equilateral triangle with each side a, is __________ from any of the three sides.
The distance, between the point of projection and the point where the projectile strikes the ground, is known as range.
The triangle law of forces states that if two forces acting simultaneously on a particle, be represented in magnitude and direction by the two sides of a triangle taken in order, then their resultant may be represented in magnitude and direction by the third side of a triangle, taken in opposite order.
The algebraic sum of the resolved parts of a number of forces in a given direction is equal to the resolved part of their resultant in the same direction. This is known as
The path of the projectile is a parabola.
The angle between two forces when the resultant is maximum and minimum respectively are
The equivalent length of a simple pendulum which gives the same frequency as compound pendulum is
A redundant frame is also called __________ frame.
Mass moment of inertia of a uni form thin rod of mass M and length (l) about its mid-point and perpendicular to its length is
A resultant force is a single force which produces the same effect as produced by all the given forces acting on a body.
When a rigid body is suspended vertically, and it oscillates with a small amplitude under the action of the force of gravity, the body is known as
Moment of inertia of a hollow circular section, as shown in the below figure about X-axis, is
If two blocks of equal mass are attached to the two ends of a light string and one of the blocks is placed over a smooth horizontal plane while the other is hung freely after passing over a smooth pulley, then the two blocks will have some motion.
During elastic impact, the relative velocity of the two bodies after impact is __________ the relative velocity of the two bodies before impact.
Work done is said to be zero, when
The force which acts along the radius of a circle and directed away from the centre of the circle is called centrifugal force.
One watt is equal to
two like parallel forces are acting at a distance of 24 mm apart and their resultant is 20 N. It the line of action of the resultant is 6 mm from any given force, the two forces are
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.