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Question
The trajectory of a particle moving in vast maidan is as shown in the figure. The coordinates of a position are The coordinates of another point at which the instantaneous velocity is same as the average velocity between the points are
The correct answer is:
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The potential energy of a particle varies with distance as shown in the graph.
The force acting on the particle is zero at
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The force acting on the particle is zero at
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A mass moves along -axis. Its acceleration as a function of its position is shown in the figure. What is the total work done on the mass by the force as the mass moves from to
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A man standing on a hill top projects a stone horizontally with speed as shown in figure. Taking the coordinate system as given in the figure. The coordinates of the point where the stone will hit the hill surface
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A particle is acted upon by a force which varies with position as shown in the figure. If the particle at has kinetic energy of 25 J, then the kinetic energy of the particle at is
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A bob of mass accelerates uniformly from rest to in time . As a function of , the instantaneous power delivered to the body is
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A particle of mass attracted with a string of length is just revolving on the vertical circle without slacking of the string. If and are speed at position and then
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A simple pendulum is released from as shown. If and represent the mass of the bob and length of the pendulum, the gain in kinetic energy at is
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P(θ) and are the pts. on the ellipse then
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A ball of mass rests on a vertical post of height . A bullet of mass , travelling with a velocity in a horizontal direction, hits the centre of the ball. After the collision, the ball and bullet travel independently. The ball hits the ground at a distance of and the bullet at a distance of from the foot of the post. The initial velocity of the bullet is
A ball of mass rests on a vertical post of height . A bullet of mass , travelling with a velocity in a horizontal direction, hits the centre of the ball. After the collision, the ball and bullet travel independently. The ball hits the ground at a distance of and the bullet at a distance of from the foot of the post. The initial velocity of the bullet is
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A particle is sliding down a frictionless hemispherical bowl. It passes the point at . At this instant of time, the horizontal component of its velocity . A bead of the same mass as is ejected from to along the horizontal string (see figure) with the speed . Friction between the bead and the string may be neglected. Let and be the respective time taken by and to reach the point . Then
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physics-General