Physics-
General
Easy

Question

A spring lies along an x axis attached to a wall at one end and a block at the other end. The block rests on a frictionless surface at x = 0. A force of constant magnitude F is applied to the block that begins to compress the spring, until the block comes to a maximum displacement X subscript m a x end subscript During the first half of the motion, applied force transfers more energy to the

  1. kinetic energy    
  2. potential energy    
  3. equal to both    
  4. depends upon mass of the block    

The correct answer is: equal to both

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A spring lies along an x axis attached to a wall at one end and a block at the other end. The block rests on a frictionless surface at x = 0. A force of constant magnitude F is applied to the block that begins to compress the spring, until the block comes to a maximum displacement X subscript m a x end subscript During the displacement, which of the curves shown in the graph best represents the work done on the spring block system by the applied force.

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STATEMENT-1 : One end of ideal massless spring is connected to fixed vertical wall and other end to a block of mass m initially at rest on smooth horizontal surface. The spring is initially in natural length. Now a horizontal force F acts on block as shown. Then the maximum extension in spring is equal to maximum compression in spring.

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STATEMENT-1 : One end of ideal massless spring is connected to fixed vertical wall and other end to a block of mass m initially at rest on smooth horizontal surface. The spring is initially in natural length. Now a horizontal force F acts on block as shown. Then the maximum extension in spring is equal to maximum compression in spring.

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Statement I : Trace of matrix  A = open square brackets table attributes columnalign left left left columnspacing 1em end attributes row cell a subscript 11      a subscript 12      a subscript 13 end cell row cell a subscript 21      a subscript 22      a subscript 23 end cell row cell a subscript 31      a subscript 32      a subscript 33 end cell end table close square brackets is equal to a11 + a22 + a33
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Statement II : Trace of a matrix is equal to sum of its diagonal elements.

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