Physics-
General
Easy

Question

Two blocks m subscript 1 end subscript and m subscript 2 end subscript (m subscript 2 end subscript greater than m subscript 1 end subscript) are connected with a spring of force constant k and are inclined at a angel theta with horizontal. If the system is released from rest, which one of the following statements is/are correct?

  1. Maximum compression in the spring fraction numerator open parentheses m subscript 1 end subscript plus m subscript 2 end subscript close parentheses g blank s i n blank theta over denominator k end fraction if there is no friction anywhere    
  2. There will be no compression or elongation in the spring if there is no friction any where    
  3. If m subscript 1 end subscript is smooth and m subscript 2 end subscript is rough there will be compression in the spring    
  4. Maximum elongation in the spring is fraction numerator open parentheses m subscript 1 end subscript minus m subscript 2 end subscript close parentheses g blank s i n theta over denominator k end fraction if all the surfaces are smooth    

The correct answer is: There will be no compression or elongation in the spring if there is no friction any where


    If the surface is smooth, then relative acceleration between blocks is zero. So, no compression or elongation takes place in spring. Hence, spring force on blocks is zero.

    Related Questions to study

    General
    physics-

    In the given figure, two bodies of mass m subscript 1 end subscript and m subscript 2 end subscript are connected by massless spring of force constant k and are placed on a smooth surface (shown in figure), then

    In the given figure, two bodies of mass m subscript 1 end subscript and m subscript 2 end subscript are connected by massless spring of force constant k and are placed on a smooth surface (shown in figure), then

    physics-General
    General
    chemistry-

    Which of the following noble gas was reacted with P t F subscript 6 end subscript by Bartlett to prepare the first noble gas compounds -

    Which of the following noble gas was reacted with P t F subscript 6 end subscript by Bartlett to prepare the first noble gas compounds -

    chemistry-General
    General
    physics-

    A set of n identical cubical blocks lies at rest parallel to each other along a line on a smooth horizontal surface. The separation between the near surfaces of any two adjacent blocks is L. The block at one end is given a speed v towards the next one at time t equals 0. All collision are completely elastic. Then

    A set of n identical cubical blocks lies at rest parallel to each other along a line on a smooth horizontal surface. The separation between the near surfaces of any two adjacent blocks is L. The block at one end is given a speed v towards the next one at time t equals 0. All collision are completely elastic. Then

    physics-General
    parallel
    General
    physics-

    The blocks A and B, each of mass m, are connected by massless spring of natural length L and spring constant k. The blocks are initially resting on a smooth horizontal floor with the spring at its natural length, as shown in figure. A third identical block C, also of mass m, moves on the floor with a speed v along the line joining A and B, and collides with A. Then

    The blocks A and B, each of mass m, are connected by massless spring of natural length L and spring constant k. The blocks are initially resting on a smooth horizontal floor with the spring at its natural length, as shown in figure. A third identical block C, also of mass m, moves on the floor with a speed v along the line joining A and B, and collides with A. Then

    physics-General
    General
    physics-

    Find the velocity of centre of the system shown in the figure.

    Find the velocity of centre of the system shown in the figure.

    physics-General
    General
    physics-

    Two blocks A and B are connected by a massless string (shown in figure). A force of 30 N is applied on block B. The distance travelled by centre of mass in 2 s starting from rest is

    Two blocks A and B are connected by a massless string (shown in figure). A force of 30 N is applied on block B. The distance travelled by centre of mass in 2 s starting from rest is

    physics-General
    parallel
    General
    physics-

    Three rods of the same mass are placed as shown in figure. What will be the coordinates of centre of mass of the system?

    Three rods of the same mass are placed as shown in figure. What will be the coordinates of centre of mass of the system?

    physics-General
    General
    maths-

    If sum from n equals 3 to straight infinity of   fraction numerator blank to the power of n C subscript 3 over denominator n factorial end fraction equals a times e to the power of b plus c then descending order of a comma b comma c

    is

    If sum from n equals 3 to straight infinity of   fraction numerator blank to the power of n C subscript 3 over denominator n factorial end fraction equals a times e to the power of b plus c then descending order of a comma b comma c

    is

    maths-General
    General
    physics-

    A disc is rolling (without slipping) on a horizontal surface C is its centre and Q and P are two points equidistant from C. Let v subscript P end subscript, v subscript Q end subscript and v subscript C end subscript be the magnitude of velocities of pints P comma blank Q and C respectively, then

    A disc is rolling (without slipping) on a horizontal surface C is its centre and Q and P are two points equidistant from C. Let v subscript P end subscript, v subscript Q end subscript and v subscript C end subscript be the magnitude of velocities of pints P comma blank Q and C respectively, then

    physics-General
    parallel
    General
    Physics-

    The acceleration of the center of mass of a uniform solid disc rolling down an inclined plane of angle alpha is

    The acceleration of the center of mass of a uniform solid disc rolling down an inclined plane of angle alpha is

    Physics-General
    General
    Physics-

    A solid sphere of mass m rolls down an inclined plane without slipping, starting from rest at the top of an inclined plane. The linear speed of the sphere at the bottom of the inclined plane is v. The kinetic energy of the sphere at the bottom is

    A solid sphere of mass m rolls down an inclined plane without slipping, starting from rest at the top of an inclined plane. The linear speed of the sphere at the bottom of the inclined plane is v. The kinetic energy of the sphere at the bottom is

    Physics-General
    General
    Physics-

    The moments of inertia of two freely rotating bodies A and B are I subscript A end subscript and I subscript B end subscript respectively. I subscript A end subscript greater than I subscript B end subscript and their angular momenta are equal. If K subscript A end subscript and K subscript B end subscript are their kinetic energies, then

    The moments of inertia of two freely rotating bodies A and B are I subscript A end subscript and I subscript B end subscript respectively. I subscript A end subscript greater than I subscript B end subscript and their angular momenta are equal. If K subscript A end subscript and K subscript B end subscript are their kinetic energies, then

    Physics-General
    parallel
    General
    biology

    Famous palaeonotologist/Palaeobotanist of India was:

    Famous palaeonotologist/Palaeobotanist of India was:

    biologyGeneral
    General
    physics-

    A small object of uniform density roll up a curved surface with an initial velocity v. If reaches up to a maximum height of fraction numerator 3 v to the power of 2 end exponent over denominator 4 g end fraction with respect to the initial position. The object is

    A small object of uniform density roll up a curved surface with an initial velocity v. If reaches up to a maximum height of fraction numerator 3 v to the power of 2 end exponent over denominator 4 g end fraction with respect to the initial position. The object is

    physics-General
    General
    physics-

    A uniform rod A B of length l and mass m is free to rotate about point A. The rod is released from rest in the horizontal position. Given that the moment of inertia of the rod about A isfraction numerator m l to the power of 2 end exponent over denominator 3 end fraction, the initial angular acceleration of the rod will be

    A uniform rod A B of length l and mass m is free to rotate about point A. The rod is released from rest in the horizontal position. Given that the moment of inertia of the rod about A isfraction numerator m l to the power of 2 end exponent over denominator 3 end fraction, the initial angular acceleration of the rod will be

    physics-General
    parallel

    card img

    With Turito Academy.

    card img

    With Turito Foundation.

    card img

    Get an Expert Advice From Turito.

    Turito Academy

    card img

    With Turito Academy.

    Test Prep

    card img

    With Turito Foundation.