A body of weight W on inclined plane of a being pulled up by a horizontal force P will be on the point of motion up the plane when P is equal to Wtan(a + <|)) W Wan(a-) W sin (a + $) TRUE ANSWER : ? YOUR ANSWER : ?
The unit of power in S.I. units is kilogram meter/sec. watt newton meter joule TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following do not have identical dimensions? Torque and energy Momentum and impulse Torque and work Moment of a force and angular momentum TRUE ANSWER : ? YOUR ANSWER : ?
Coulomb friction is the friction between two lubricated surfaces bodies having relative motion solids and liquids two dry surfaces TRUE ANSWER : ? YOUR ANSWER : ?
Center of percussion is point of suspension the point of metacentre the point of application of the resultant of all the forces tending to cause a body to rotate about a certain axis the point of C.G. TRUE ANSWER : ? YOUR ANSWER : ?
Limiting force of friction is the Tangent of angle between normal reaction and the resultant of normal reaction and limiting friction The friction force acting when the body is just about to move the friction force acting when the body is in motion Ratio of limiting friction and normal reaction TRUE ANSWER : ? YOUR ANSWER : ?
A sample of metal weighs 219 gms in air, 180 gms in water, 120 gms in an unknown fluid. Then which is correct statement about density of metal metal is twice as dense as water density of metal can’t be determined metal will float in water metal is twice as dense as unknown fluid TRUE ANSWER : ? YOUR ANSWER : ?
In ideal machines mechanical advantage is unity mechanical advantage is greater than velocity ratio mechanical advantage is less than velocity ratio mechanical advantage is equal to velocity ratio TRUE ANSWER : ? YOUR ANSWER : ?
A cable with a uniformly distributed load per horizontal metre run will take the following shape Elliptical Parabola Straight line Hyperbola TRUE ANSWER : ? YOUR ANSWER : ?
The angle which an inclined plane makes with the horizontal when a body placed on it is about to move down is known as angle of friction kinematic friction limiting friction repose TRUE ANSWER : ? YOUR ANSWER : ?