Home
Class 11
PHYSICS
If the resultant of all the external for...

If the resultant of all the external forces acting on a system of particles is zero, then form an inrtial frame, one can surely say that

A

linear momentum of the system does not change in time.

B

kinetic energy of the system does not change in time.

C

potential energy of the system does not change in time.

D

angular momentum of the system does not change in time.

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

  • Centre of mass

    MODERN PUBLICATION|Exercise Exercise|30 Videos
  • Dynamics of Circular Motion

    MODERN PUBLICATION|Exercise Exercise|81 Videos

Similar Questions

Explore conceptually related problems

The net external torque on a system of particles about an axis is zero. Which of the following are compatible with it?

If a body is not at rest, the net external force acting on it cannot be zero. is it true or false?

Fill in the blanks: When no external force acts on a system the total _____ of the system remains constant.

The centre of mass of a system of particles moves as if all the _________ of the system was concentrated at the _________ of mass and all the external forces acting on the system were applied directly at this point.

The vector sum of a system of non-collinear forces acting on a rigid body is gives to be non-zero. If the vector sum of all the torques due to the system of forces about a certain point is found to be zero, does this mean that it is necessarily zero about any arbitrary point?

When brakes are applied in a car,the brake-shoes apply frictional force on the wheels.these forces are internal for the system(car).For retardation,external forces ust act on the system.The force of friction at the road surface remains the same before and after teh brakes are applied (f = mu N) .How does the car stop?

A colloidal solution is a type of mixture which consists of particles whose size varies between 1 and 1000 nanometres. In colloidal solution the particles are distributed evenly. During this process the particles do not settle down. This is one of the best know thing about colloidal solutions. Properties of colloids and their variation are a well-known area ever since the primitive age. The best example to prove their familiarity with us is that we know from very early times that coagulation of milk results in the formation of curd. Physical properties of colloids 1. The nature of the colloidal solution is heterogeneous i.e. unlike. These solutions dwell with two different phases : • Dispersed medium Dispersed phase. 2. Despite the fact that colloidal dispersions are unlike in description (nature), yet the dispersed fragments are not detectable by the human eye. This is due to the microscopic size of the particles in the solution. 3. The colour of the colloidal dispersion is determined by particles in the solution based on their size. The wavelengths of light that is absorbed will be longer ifthe size of the particle is large. 4. As a result of its size, the colloidal fragments can easily be passed through a traditional filter paper. However, these particles can be filtered by using membranes such as animal, cellophane, and ultrafilters. What are colloidal solution particle.

A colloidal solution is a type of mixture which consists of particles whose size varies between 1 and 1000 nanometres. In colloidal solution the particles are distributed evenly. During this process the particles do not settle down. This is one of the best know thing about colloidal solutions. Properties of colloids and their variation are a well-known area ever since the primitive age. The best example to prove their familiarity with us is that we know from very early times that coagulation of milk results in the formation of curd. Physical properties of colloids 1. The nature of the colloidal solution is heterogeneous i.e. unlike. These solutions dwell with two different phases : • Dispersed medium Dispersed phase. 2. Despite the fact that colloidal dispersions are unlike in description (nature), yet the dispersed fragments are not detectabJe by the human eye. This is due to the microscopic size of the particles in the solution. 3. The colour of the colloidal dispersion is determined by particles in the solution based on their size. The wavelengths of light that is absorbed will be longer ifthe size of the particle is large. 4. As a result of its size, the colloidal fragments can easily be passed through a traditional filter paper. However, these particles can be filtered by using membranes such as animal, cellophane, and ultrafilters. What type of phases of colloidal solutions ?

A colloidal solution is a type of mixture which consists of particles whose size varies between 1 and 1000 nanometres. In colloidal solution the particles are distributed evenly. During this process the particles do not settle down. This is one of the best know thing about colloidal solutions. Properties of colloids and their variation are a well-known area ever since the primitive age. The best example to prove their familiarity with us is that we know from very early times that coagulation of milk results in the formation of curd. Physical properties of colloids 1. The nature of the colloidal solution is heterogeneous i.e. unlike. These solutions dwell with two different phases : • Dispersed medium Dispersed phase. 2. Despite the fact that colloidal dispersions are unlike in description (nature), yet the dispersed fragments are not detectabJe by the human eye. This is due to the microscopic size of the particles in the solution. 3. The colour of the colloidal dispersion is determined by particles in the solution based on their size. The wavelengths of light that is absorbed will be longer ifthe size of the particle is large. 4. As a result of its size, the colloidal fragments can easily be passed through a traditional filter paper. However, these particles can be filtered by using membranes such as animal, cellophane, and ultrafilters. Give the name of membrane used for filteration ?

MODERN PUBLICATION-Competitive Exam Question-Exercise
  1. Essential characteristic of equilibrium is :

    Text Solution

    |

  2. The pulleys and strings shown in the figure are smooth and of negligib...

    Text Solution

    |

  3. If the resultant of all the external forces acting on a system of part...

    Text Solution

    |

  4. Statement 1. It is easier to pull a heavy object than to push it on a ...

    Text Solution

    |

  5. A block of mass 2 kg rests on a plane inclined at 30^@ with the horizo...

    Text Solution

    |

  6. When a bicycle is in motion, the force of friction exerted by ground o...

    Text Solution

    |

  7. A weight W rests on a rough horizontal plane. If the angle of friction...

    Text Solution

    |

  8. What is the maximum value of the foce F, such that the block shown in ...

    Text Solution

    |

  9. A long horizontal rod has a bead, which can slide along its length and...

    Text Solution

    |

  10. A particle revolves round a circular path with auniform speed. The cen...

    Text Solution

    |

  11. A car is moving along a circular horizontal track of radius 10 m with ...

    Text Solution

    |

  12. The kinetic energy K of the particle moving in a circle of radius R de...

    Text Solution

    |

  13. A stone tied to string of length l is whirled in a vertical circle wit...

    Text Solution

    |

  14. A small block is shot into each of the four tracks as shown below. Eac...

    Text Solution

    |

  15. The driver of a car suddenly sees a broad wall in front of him. He sho...

    Text Solution

    |

  16. A piece of paper and an iron piece are dropped simultaneously from the...

    Text Solution

    |

  17. If a particle is moving with a constant speed along a straight line, w...

    Text Solution

    |

  18. Inertia is the property by virtue of which the body is unable to chang...

    Text Solution

    |

  19. An athlete runs some distance before taking a long jump. This is becau...

    Text Solution

    |

  20. Why does the horse rider fall forward when a running horse suddenly st...

    Text Solution

    |