Two forces are acting at an angle of 120°. The bigger force is 40 N and the resultant is perpendicular to the smaller one. The smaller force is 20 N 120 N None of the listed here 40 N TRUE ANSWER : ? YOUR ANSWER : ?
When a body of mass moment of inertia 'I' (about a given axis) is rotated about that axis with an angular velocity to, then the kinetic energy of rotation is 0.5 Iω2 Iω 0.5 Iω Iω2 TRUE ANSWER : ? YOUR ANSWER : ?
A rubber ball is dropped from a height of 2 m. If there is no loss of velocity after rebounding, the ball will rise to a height of 3 m 1 m 2 m 4 m TRUE ANSWER : ? YOUR ANSWER : ?
The resultant of two equal forces ‘P’ making an angle ‘θ’, is given by 2P cosθ/2 2P cotθ/2 2P sinθ/2 2P tanθ/2 TRUE ANSWER : ? YOUR ANSWER : ?
The centre of gravity of an isosceles triangle with base (p) and sides (q) from its base is [√(4p² - q²)]/6 (p² + q²)/4 (4p² - q²)/6 (p² - q²)/4 TRUE ANSWER : ? YOUR ANSWER : ?
The forces which meet at one point, but their lines of action __________ on the same plane, are Known as non-coplanar concurrent forces. Either A or B Do not lie Lie None of these TRUE ANSWER : ? YOUR ANSWER : ?
The skidding away of the vehicle on a level circular path can be avoided if the force of friction between the wheels and the ground is __________ the centrifugal force. Equal to Greater than None of these Less than TRUE ANSWER : ? YOUR ANSWER : ?
The forces, which meet at one point, but their lines of action do not lie in a plane, are called Non-coplanar concurrent forces Intersecting forces Non-coplanar non-concurrent forces Coplanar non-concurrent forces TRUE ANSWER : ? YOUR ANSWER : ?
The velocity ratio of a differential pulley block with D and d as the diameters of larger and smaller pulley, is 2D/(D - d) 2D/(D + d) D/(D - d) D/(D + d) TRUE ANSWER : ? YOUR ANSWER : ?
On the ladder resting on the ground and leaning against a smooth vertical wall, the force of friction will be Upwards at its upper end Downwards at its upper end Perpendicular to the wall at its upper end Zero at its upper end TRUE ANSWER : ? YOUR ANSWER : ?