Physics Test - ...

The excess pressure inside a spherical drop of water is four times that of another drop. Then, their mass ratio is

A balloon starts rising from the ground with an acceleration of 1.25 m/s2. After 8 s, a stone is released from the balloon. The stone will, after release from the balloon,

A particle in SHM is described by the displacement equation x(t) = A cos (ωt + θ). If the initial (t = 0) position of the particle is 1 cm and its initial velocity is π cm/s, then what is its amplitude? (The angular frequency of the particle is πs^-1.)

From the top of a tower, a stone is thrown up and reaches the ground in time t₁ = 9 s. A second stone is thrown down with the same speed and reaches the ground in time t₂ = 4 s. A third stone is released from rest and reaches the ground in time t₃, which is equal to

Two balls marked 1 and 2 of the same mass m and a third ball marked 3 of mass M are arranged over a smooth horizontal surface as shown in the figure. Ball 1 moves with a velocity v₁toward balls 2 and 3. All collisions are assumed to be elastic. If M < m, the number of collisions between the balls will be

A spring of force constant k is cut into two pieces such that one piece is double the length of the other. The force constant of the longer piece will be

A particle has an initial velocity of 9 m/s due east and a constant acceleration of 2 m/s2 due west. The distance covered by the particle in the fifth second of its motion is

A block released on a rough inclined plane of inclination = 30° slides down the plane with an acceleration g/4, where g is the acceleration due to gravity. What is the coefficient of friction between the block and the inclined plane?

A boy, while catching a ball, experiences an impulse of 6 Ns. If the mass of the ball is 200 g, then what was the speed of the ball before it was caught?

The angular velocity of a planet revolving in an elliptical orbit around the sun __________ when it comes near the sun