Physics-
General
Easy
Question
A dise of mass m moving on a horizontal surface with velocity v collides elastically to an identical stationary dise as shown in figure. The velocities of two discs after collision are
- v sin
v cos 
v cos
The correct answer is: v sin v cos
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A particle of mass m moving with a speed v collides elastically with another particle of mass 2m on a horizontal circular tube of radius R, and then select the correct alternative (s)
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A ball is projected horizontally from a point A with velocity v towards a vertical wall P(moving away from point A with velocity v/4) as shown. The distance travelled by the wall till the ball hits the floor for the first time is (taking all collisions are elastic)
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Four massless springs whose force constants are 
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Five identical springs are used in the following three configurations. The time periods of vertical oscillations in configurations i), ii) and iii) are in the ratio
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A mass M is attached to a horizontal spring of force constant k fixed on one side to a rigid support as shown in figure. The mass oscillates on a frictionless surface with time period T and amplitude A . When the mass is in equilibrium position. Another mass m is gently placed on it. What will be the new amplitude of oscillations?
A mass M is attached to a horizontal spring of force constant k fixed on one side to a rigid support as shown in figure. The mass oscillates on a frictionless surface with time period T and amplitude A . When the mass is in equilibrium position. Another mass m is gently placed on it. What will be the new amplitude of oscillations?
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Which of the following figure represent(s) damped simple harmonic motions?
Which of the following figure represent(s) damped simple harmonic motions?
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A ball of mass 1 kg is attached to an inextensible string. The ball is released from the position shown in figure. The impulse imparted by the string to the ball immediately after the string becomes taut is
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A block of mass 2 kg is moving on a frictionless horizontal surface with a velocity of 1 m/s towards another block of equal mass kept at rest. The spring constant of the spring fixed at one end is 100 N/m. Find the maximum compression of the spring.
A block of mass 2 kg is moving on a frictionless horizontal surface with a velocity of 1 m/s towards another block of equal mass kept at rest. The spring constant of the spring fixed at one end is 100 N/m. Find the maximum compression of the spring.
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A body of mass 3 kg is acted on by a force which varies as shown in the graph below. The momentum acquired is given by (given initial momentum
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A uniform rod of length 
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A uniform rod of length and mass is pivoted at the centre. Its two ends are attached to two springs of equal spring constant The springs are fixed to rigid supports as shown in the figure, and the rod is free to oscillate in the horizontal plane. The rod is gently pushed through a small angle in one direction and released. The frequency of oscillation is
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The frequency of oscillation of the springs shown in the figure will be
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The mass M shown in the figure oscillates in simple harmonic motion with amplitude A. The amplitude of the point P is
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A small block is connected to one end of a massless spring of un-stretched length 
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and released from rest at 
It then executes simple harmonic motion with angular frequency 
Simultaneously at 
a small pebble is projected with speed 
frompoint 
is at angle of 
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If the pebble hits the block at 
the value of is (take 
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A small block is connected to one end of a massless spring of un-stretched length . The other end of the spring (see the figure) is fixed. The system lies on a horizontal frictionless surface. The block is stretched by and released from rest at It then executes simple harmonic motion with angular frequency Simultaneously at a small pebble is projected with speed frompoint is at angle of as shown in the figure. Point is at a horizontal distance of from If the pebble hits the block at the value of is (take )
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A small block is connected to one end of a massless spring of un-stretched length . The other end of the spring (see the figure) is fixed. The system lies on a horizontal frictionless surface. The block is stretched by and released from rest at It then executes simple harmonic motion with angular frequency Simultaneously at a small pebble is projected with speed frompoint is at angle of as shown in the figure. Point is at a horizontal distance of from If the pebble hits the block at the value of is (take )
A small block is connected to one end of a massless spring of un-stretched length . The other end of the spring (see the figure) is fixed. The system lies on a horizontal frictionless surface. The block is stretched by and released from rest at It then executes simple harmonic motion with angular frequency Simultaneously at a small pebble is projected with speed frompoint is at angle of as shown in the figure. Point is at a horizontal distance of from If the pebble hits the block at the value of is (take )
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A projectile of mass m is fired with velocity v from a point P as shown. Neglecting air resistance, the magnitude of the changed in momentum between the points P and arriving at Q is
A projectile of mass m is fired with velocity v from a point P as shown. Neglecting air resistance, the magnitude of the changed in momentum between the points P and arriving at Q is
physics-General
