The potential energy of a vertically raised body is __________ the kinetic energy of a vertically falling body. Equal to Greater than Less than None of these TRUE ANSWER : ? YOUR ANSWER : ?
The maximum height of a projectile on a horizontal plane, is u² sin²α/g u² sin²α/2g u² cos²α/g u² cos²α/2g TRUE ANSWER : ? YOUR ANSWER : ?
When the spring of a watch is wound, it will possess Kinetic energy Strain energy Heat energy Electrical energy TRUE ANSWER : ? YOUR ANSWER : ?
The friction experienced by a body, when in motion, is known as Dynamic friction Limiting friction Static friction Rolling friction TRUE ANSWER : ? YOUR ANSWER : ?
A screw jack used for lifting the loads is A reversible machine None of these A non-reversible machine An ideal machine TRUE ANSWER : ? YOUR ANSWER : ?
Tension in the cable supporting a lift is more when the lift is moving __________ with an acceleration. Upwards Horizontal Downwards None of these TRUE ANSWER : ? YOUR ANSWER : ?
The moment of a force All of these Is equal to twice the area of the triangle, whose base is the line representing the force and whose vertex is the point, about which the moment is taken Is the turning effect produced by a force, on the body, on which it acts Is equal to the product of force acting on the body and the perpendicular distance of a point and the line of action of the force TRUE ANSWER : ? YOUR ANSWER : ?
The algebraic sum of moments of the forces forming couple about any point in their plane is Constant Equal to the moment of the couple Both of above are wrong Both of above are correct TRUE ANSWER : ? YOUR ANSWER : ?
In order to completely specify angular displacement by a vector, it must fix Direction of the axis of rotation Sense of angular displacement All of these Magnitude of angular displacement TRUE ANSWER : ? YOUR ANSWER : ?
The wheels of a moving car possess Kinetic energy of translation and rotation both Potential energy only Kinetic energy of translation only Kinetic energy of rotation only TRUE ANSWER : ? YOUR ANSWER : ?