Impulse can be obtained from a Force-time diagram Velocity-displacement diagram Force-displacement diagram Velocity-time diagram TRUE ANSWER : ? YOUR ANSWER : ?
To double the period of oscillation of a simple pendulum Its length should be quadrupled The mass of its bob should be doubled The mass of its bob should be quadrupled Its length should be doubled TRUE ANSWER : ? YOUR ANSWER : ?
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 Its longer side The diagonal of the parallelogram which passes through the point of intersection of the forces The diagonal of the parallelogram which does not pass through the point of intersection of the forces Its shorter side TRUE ANSWER : ? YOUR ANSWER : ?
A projectile has maximum range of 40 m on a horizontal plane. If angle of projection is a and the time of flight is 1 second, then sin a must be about (Assume g = 10 m/sec²) 43835 43833 43832 43834 TRUE ANSWER : ? YOUR ANSWER : ?
The resultant of two forces acting at right angles is √34 kg and acting at 60° is 70 kg. The forces are 2 kg and 3 kg 3 kg and 5 kg 1 kg and 4 kg √3 kg and √5 kg TRUE ANSWER : ? YOUR ANSWER : ?
If two forces are in equilibrium, then the forces must (i) Be equal in magnitude (ii) Be opposite in sense (iii) Act along the same line (i) and (iii) All (i), (ii) and (iii) (i) and (ii) Only (i) TRUE ANSWER : ? YOUR ANSWER : ?
Time of flight of a projectile on a horizontal plane, is 2u sinα/g 2u tanα/g 2u cosα/g 2u cotα/g TRUE ANSWER : ? YOUR ANSWER : ?
Newton’s Law of Motion is: All listed here The rate of change of momentum is directly proportional to the impressed force, and takes place in the same direction, in which the force acts Everybody continues in its state of rest or of uniform motion in a straight line, unless it is acted upon by some external force To every action, there is always an equal and opposite reaction TRUE ANSWER : ? YOUR ANSWER : ?
The following is in unstable equilibrium A satellite encircling the earth A solid cube resting on one edge A uniform solid cone resting on a generator on a smooth horizontal plane A uniform solid cone resting on its base on a horizontal plane TRUE ANSWER : ? YOUR ANSWER : ?