84601. If the resultant of a number of forces acting on a body is zero, then the body will not be in equilibrium.
84602. The friction experienced by a body, when at rest, is known as
84603. The moment of inertia of a solid sphere of mass m and radius r is
84604. The matter contained in a body, is called
84605. The centre of percussion is below the centre of gravity of the body and is at a distance equal to
84606. If a number of coplaner forces acting at a point be in equilibrium, the sum of clockwise moments must be __________ the sum of anticlockwise moments, about any point.
84607. The forces, which do not meet at one point, but their lines of action lie on the same plane, are known as coplaner non-concurrent forces.
84608. If three forces acting at a point be represented in magnitude and direction by the three sides of a triangle, taken in order, the forces shall be in equilibrium.
84609. The angle which the normal reaction makes with the resultant reaction is called angle of friction.
84610. 12 men can do a piece of work in 10 days.How many men would be required to do the same in 8 days?
84611. The law of the machine is(where P = Effort applied to lift the load, m = A constant which is equal to the slope of the line, W = Load lifted, and C = Another constant which represents the machine friction.)
84612. In a framed structure, as shown in the below figure, the force in the member AB is __________ the force in member AC.
84613. The moment of the force P about O as shown in the below figure is
84614. According to lami's theorem
84615. Moment of inertia of a hollow circular section, as shown in the below figure about an axis perpendicular to the section, is __________ than that about X-X axis.
84616. The amplitude is always __________ radius of the circle.
84617. When a body falls freely under gravitational force, it possesses __________ weight.
84618. The centre of gravity of a quadrant of a circle lies along its central radius (r) at a distance of
84619. A car covers the first 35 km of its journey in 45 minutes and covers the remaining 69 km in 75 minutes.What is the average speed of the car?
84620. The maximum mechanical advantage of a lifting machine is
84621. A machine having an efficiency greater than 50%, is known as
84622. The impact between two lead spheres is approximately equal to an __________ impact.
84623. 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.
84624. If a body is thrown upwards, then the gravitational acceleration is taken as zero.
84625. An ideal machine is one whose efficiency is
84626. The energy possessed by a body, for doing work by virtue of its position, is called
84627. Moment of inertia is the
84628. The coefficient of restitution for inelastic bodies is
84629. When the lift is moving upwards with some acceleration, the pressure exerted by a man is __________ proportional to its acceleration.
84630. The term 'centroid' is
84631. Two forces are acting at an angle of 120°. The bigger force is 40N and the resultant is perpendicular to the smaller one. The smaller force is
84632. The centre of gravity a T-section 100 mm x 150 mm x 50 mm from its bottom is
84633. In order to completely specify angular displacement by a vector, it must fix
84634. Which of the following statement is correct in connection with projectiles?
84635. The acceleration of a body sliding down an inclined surface is
84636. If surface area and volume of a sphere can be represented by the same number,then what is the length of the diameter of the sphere?
84637. The velocity ratio of a simple wheel and axle with D and d as the diameters of effort wheel and load axle, is
84638. The unit of force in S.I. system of units is
84639. The moment of inertia of a solid cone of mass m and base radius r about its vertical axis is
84640. A body is said to move or vibrate with simple harmonic motion if its acceleration is directed towards the mean position.
84641. A ladder is resting on a rough ground and leaning against a smooth vertical wall. The force of friction will act
84642. The force induced in the string AB due to the load W, as shown in the below figure is
84643. A spherical body is symmetrical about its perpendicular axis. According to Routh's rule, the moment of inertia of a body about an axis passing through its centre of gravity is(where, M = Mass of the body, and S = Sum of the squares of the two semi-axes.)
84644. 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
84645. The efficiency of a lifting machine is the ratio of
84646. A ladder is resting on a smooth ground and leaning against a rough vertical wall. The force of friction will act
84647. The length of a second's pendulum is
84648. The slope on the road surface generally provided on the curves is known as
84649. Coplaner non-concurrent forces are those forces which __________ at one point, but their lines of action lie on the same plane.
84650. The moment of inertia of a rectangular section 3cm wide and 4cm deep about X-X axis is
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