The velocity of a particle (v) moving with simple harmonic motion, at any instant is given by (where, r = Amplitude of motion, and y = Displacement of the particle from mean position.) ω.√(y² - r²) ω.√(r² - y²) ω².√(y² - r²) ω².√(r² - y²) TRUE ANSWER : ? YOUR ANSWER : ?
Work done is said to be zero, when Some force acts on a body, but displacement is zero Either (A) or (B) No force acts on a body but some displacement takes place None of these TRUE ANSWER : ? YOUR ANSWER : ?
The unit of angular velocity is m/min Both (B) and (C) Revolutions/min rad/s TRUE ANSWER : ? YOUR ANSWER : ?
The moment of inertia of a square of side (a) about an axis through its center of gravity is a4/8 a4/36 a4/12 a4/4 TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following are vector quantities? Linear velocity All of these Linear displacement Linear acceleration TRUE ANSWER : ? YOUR ANSWER : ?
The matter contained in a body, is called Weight Mass Momentum Impulsive force TRUE ANSWER : ? YOUR ANSWER : ?
The linear velocity of a body rotating at ω rad/s along a circular path of radius r is given by ω².r ω²/r ω.r ω/r TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following statement is correct in connection with projectiles? A path, traced by a projectile in the space, is known as trajectory. The velocity, with which a projectile is projected, is known as the velocity of projection. The angle, with the horizontal, at which a projectile is projected, is known as angle of projection. All of these TRUE ANSWER : ? YOUR ANSWER : ?
The overturning of a vehicle on a level circular path can be avoided if the velocity of vehicle is __________ √(gra/h) Greater than Less than Equal to None of these TRUE ANSWER : ? YOUR ANSWER : ?