Home
Class 11
PHYSICS
A ladder is leaned against a smooth wall...

A ladder is leaned against a smooth wall and it is allowed to slip on a frictionless floor. Which figure represents the track of its centre of mass ?

A

B

C

D

Text Solution

Verified by Experts

The correct Answer is:
C
When the system moves under an external force then the point moves in the same way as a single particle would move under the same external force. This point is called centre of mass. In the given case the acceleration acts in the downward direction, in the centre.
Promotional Banner

Topper's Solved these Questions

  • ROTATIONAL MOTION

    ERRORLESS|Exercise ASSERTION AND REASON|25 Videos

  • ROTATIONAL MOTION

    ERRORLESS|Exercise NCERT BASED QUESTIONS (Torque and Couple)|27 Videos

  • ROTATIONAL MOTION

    ERRORLESS|Exercise NCERT BASED QUESTIONS (Rolling on Inclined Plane)|54 Videos

  • NEWTON'S LAWS OF MOTION

    ERRORLESS|Exercise ASSERTION & REASON |18 Videos

  • SIMPLE HARMONIC MOTION

    ERRORLESS|Exercise Assertion & Reason|15 Videos

Similar Questions

Explore conceptually related problems

A ring is allowed to roll down on an incline of 1 in 10 without slipping. The acceleration of its centre of mass is

A ladder leans against a wall if the ladder Is not to slip which one of the following must be true?

A ladder of length 5 m is placed against a smooth wall as shown in figure. The coefficient or friction is mu between ladder and ground. What is the minimum value of mu , If the ladder is not to slip?

If a ladder is not in balance against a smooth vertical wall, then it can be made in balance by :-

A light ladder rests onn te rough floor of a room, leaning against a smooth wall. The ladder touches the wall at height h above the floor. A man climbs up the ladder until the base of the ladder is on the verge of slipping. The coefficint of static friction between the foot of the ladder and floor is mu . (a) What is the horizontal distance moved by the man? (b) Solve part (a) if the ladder is uniform and has the same weight as the man and the base of the ladder is at a distance l from the wall.

A uniform ladder of length 3.25 m and weight 250 N is placed against a smooth vertical wall with its lower end 1.25 m from the wall. If coefficient of friction between the ladder and the floor is 0.3, then, find the frictional force acting on the ladder at the point of contact between ladder and floor.

A ladder wighing 300 N is placed against a smooth vertical wall having a coefficient of friction between it and the floor of 0.2. What is the maximum force of friction available at the point of contact between the ladder and the floor?

A 5.5m long ladder is leaned against a wall. The ladder reaches the wall to a height of 4.4m. Find the distance between the wall and the foot of the ladder.

ERRORLESS-ROTATIONAL MOTION-PAST YEARS QUESTIONS
  1. Two spherical bodies of mass M and 5M & radii R & 2R respectively are ...

    Text Solution

    |

  2. A ladder is leaned against a smooth wall and it is allowed to slip on ...

    Text Solution

    |

  3. A wheel has angular acceleration of 3.0 rad//s^2 and an initial angula...

    Text Solution

    |

  4. The direction of the angular velocity vector is along

    Text Solution

    |

  5. If the equation for the displacement of a particle moving in a circula...

    Text Solution

    |

  6. A rope is wound around a hollow cylinder of mass 3 kg and radius 40 cm...

    Text Solution

    |

  7. Two particles A and B are moving in uniform circular motion in concent...

    Text Solution

    |

  8. Three point masses each of mass m are placed at the corners of an equi...

    Text Solution

    |

  9. The moment of inertia of a rod about an axis through its centre and pe...

    Text Solution

    |

  10. From a disc of radius R and mass M, a circular hole of diameter , R wh...

    Text Solution

    |

  11. A uniform cylinder has radius R and length L. If the moment of inertia...

    Text Solution

    |

  12. A solid sphere is rotating freely about its symmetry axis in free spac...

    Text Solution

    |

  13. A light rod of length l has two masses m1 and m2 attached to its two e...

    Text Solution

    |

  14. A uniform rod AB of length l and mass m is free to rotate abou...

    Text Solution

    |

  15. A constant torque of 31.4 N-m is exterted on a pivoted wheel. If the a...

    Text Solution

    |

  16. Which of following statements are correct ? ltbgt (a) Centre of mass ...

    Text Solution

    |

  17. A solid cylinder of mass 2 kg and radius 4 cm rotating about its axis ...

    Text Solution

    |

  18. A horizontal platform is rotating with uniform angular velcity around ...

    Text Solution

    |

  19. In an orbital motion, the angular momentum vector is :

    Text Solution

    |

  20. A constant torque acting on a uniform circular wheel changes its angul...

    Text Solution

    |