Home
Class 12
PHYSICS
Statement-1: if there is no external tor...

Statement-1: if there is no external torque on a body about its centre of mass, then the velocity of the center of mass remains constant.
Statement-2: The linear momentum of an isolated system remains constant.

Text Solution

Verified by Experts

The correct Answer is:
D

For statement-1: Force may be acting through centre of mass as shown in figure. For this, torque about CM will be zero. The force F will produce an acceleration in the CM.
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • ROTATIONAL MOTION

    VMC MODULES ENGLISH|Exercise JEE Advanced (Archive) (MATRIX MATCH TYPE)|1 Videos
  • ROTATIONAL MOTION

    VMC MODULES ENGLISH|Exercise JEE Advanced (Archive) (NUMERICAL VALUE TYPE)|15 Videos
  • ROTATIONAL MOTION

    VMC MODULES ENGLISH|Exercise JEE Advanced (Archive) (LINKED COMPREHENSIVE TYPE)|7 Videos
  • REVISION TEST-2 JEE

    VMC MODULES ENGLISH|Exercise PHYSICS|25 Videos
  • SIMPLE HARMONIC MOTION

    VMC MODULES ENGLISH|Exercise 7-previous year question|46 Videos

Similar Questions

Explore conceptually related problems

(a) Show that the velocity of the centre of mass of a moving isolated system remains constant.

Statement -1 : When a girl jumbs from a boat, the boat slightly moves away from the shore. and Statement-2 : The total linear momentum of an isolated system remain conserved.

Knowledge Check

  • The velocity of centre of mass of the system remains constant, if the total external force acting on the system is.

    A
    a. minimum
    B
    b. maximum
    C
    c. unity
    D
    d. zero
  • For a given mass and velocity the kinetic energy remains constant if ………….

    A
    mass is four times and velocity is 7.
    B
    mass is 1 and velocity is doubled.
    C
    mass and velocity both are squared.
    D
    none of the above.
  • Statement-1 : The centre of mass of a body may lie where there is no mass. Statement-2 : The centre of mass has nothing to do with the mass.

    A
    If both assertion and reason are true and reason is the correct explanation of assertion.
    B
    If both assertion and reason are true but reason is not the correct explanation of assertion
    C
    If assertion is true but reason is false.
    D
    If both assertion and reason are false.
  • Similar Questions

    Explore conceptually related problems

    When there is no external torque acting on a body moving in an elliptical path, which of the following quantities remain constant ?

    If there is no external force acting on a nonrigid body, which of the followhng quantities must remain constant?

    Consider the following two statements: A. linear momentum of the system remains constant. B. Centre of mass of the system remains at rest

    Consider the following two statements: A. Kinear momentum of the system remains constant. B. Centre of mass of the system remains at rest

    The linear momentum of a body of mass m moving with velocity v is :