In ideal machines, mechanical advantage is __________ velocity ratio. Greater than None of these Less than Equal to TRUE ANSWER : ? YOUR ANSWER : ?
The maximum velocity of a particle moving with simple harmonic motion is ω ω/r ω2r ωr TRUE ANSWER : ? YOUR ANSWER : ?
For any system of coplanar forces, the condition of equilibrium is that the Algebraic sum of moments of all the forces about any point should be zero Algebraic sum of the horizontal components of all the forces should be zero Algebraic sum of the vertical components of all the forces should be zero All of these TRUE ANSWER : ? YOUR ANSWER : ?
The acceleration of a particle moving with simple harmonic motion, at any instant is given by ω2/y ω3.y ω2.y ω.y TRUE ANSWER : ? YOUR ANSWER : ?
When a body of mass 'm' attains a velocity 'v' from rest in time 't', then the kinetic energy of translation is mv2 0.5 mgv2 mgv2 0.5 mv2 TRUE ANSWER : ? YOUR ANSWER : ?
The time of flight of a projectile on downward inclined plane depends upon Both (A) and (B) None of these Angle of inclination of the plane Angle of projection TRUE ANSWER : ? YOUR ANSWER : ?
The moment of inertia of a sphere of mass 'm' and radius 'r', about an axis tangential to it, is 7mr²/3 2mr²/5 2mr²/3 7mr²/5 TRUE ANSWER : ? YOUR ANSWER : ?
The center of gravity of a semi-circle lies at a distance of __________ from its base measured along the vertical radius. 3r/4π 8r/3 4r/ 3π 3r/ 8 TRUE ANSWER : ? YOUR ANSWER : ?
The efficiency of a lifting machine is the ratio of Output to the input Work done by the machine to the work done on the machine All of these Mechanical advantage to the velocity ratio TRUE ANSWER : ? YOUR ANSWER : ?
A ladder is resting on a rough ground and leaning against a smooth vertical wall. The force of friction will act Upward at its upper end Downward at its upper end Zero at its upper end Perpendicular to the wall at its upper end TRUE ANSWER : ? YOUR ANSWER : ?