Home
Class 11
PHYSICS
A ladders is more likely to slip when a ...

A ladders is more likely to slip when a person is near the top than when he is near the bottom.
The friction between the ladder and floor decreases as he climbs up.

A

If both assertion and reason are true and reason is the correct explanation of assertion.

B

If both assertion and reason are 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.

Text Solution

Verified by Experts

The correct Answer is:
C
( c) As the person climbs up, normal reaction and friction between the ladder and the wall both increase. This decrease normal reaction form the floor, decreasing limiting value of friction there. This increases the possibility of the ladder slipping.
Promotional Banner

Topper's Solved these Questions

  • ROTATIONAL DYNAMICS

    A2Z|Exercise NEET Questions|59 Videos

  • ROTATIONAL DYNAMICS

    A2Z|Exercise AIIMS Questions|40 Videos

  • ROTATIONAL DYNAMICS

    A2Z|Exercise Problems Based On Mixed Concepts|31 Videos

  • PROPERTIES OF MATTER

    A2Z|Exercise Chapter Test|29 Videos

  • THERMAL PROPERTIES OF MATTER

    A2Z|Exercise Chapter Test|30 Videos

Similar Questions

Explore conceptually related problems

Assertion: A ladder is more apt to slip, when you are high up on it than when you just begin to climb. Reason: At the high up on the ladder, the torque is large and on climbing up the torque is small.

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 L and mass m_(1) rests against a frictionless wall. The ladder makes an angle theta with the horizontal. (a) Find the horizontal and vertical forces the ground exerts on the base of the ladder when a firefighter of mass m_(2) is a distance x from the bottom. (b) If the ladder is just on the verge of slipping when the firefighter is a distance d from the bottom, what is the coefficient of static friction between ladder and ground?

Why does a person feel pain when he stands on a pile of gravel than when he stands on a bed of sand?

A person is sitting near the edge fo a rotating platfrom when he walks towards the centere, then:

A ladder rests on the floor of a room, leaning agains a wall. If the coefficient of static friction between the ladder the floor is mu_(f) and that between ladder and is mu_(w) , what is the minimum angle theta that the ladder can make with the floor if the ladder is not to slip? Assume that the mass of the ladder is distributed uniformly.

A ladder 5m long is leaning against a wall. The bottom of the ladder is pulled along the ground,away from the wall at the rate of 10cm/s. How fast is the angle between the ladder and the ground decreasing when the foot of the ladder is 2m away from the wall?

In the figure, a ladder of mass m is shown leaning against a wall. It is in static equilibrium making an angle theta with the horizontal floor. The coefficient of friction between the wall and the ladder is mu_1 and that between the floor and the ladder is mu_2. the normal reaction of the wall on the ladder is N_1 and that of the floor is N_2. if the ladder is about to slip. than

A2Z-ROTATIONAL DYNAMICS-Assertion Reasoning
  1. If rod is thrown upward with initial angular velocity and velocity of ...

    Text Solution

    |

  2. Statement-1 : The centre of mass of a body may lie where there is no m...

    Text Solution

    |

  3. The mass of a body cannot be considered to be concentrated at the cent...

    Text Solution

    |

  4. The position of centre of mass does not depend upon the reference fram...

    Text Solution

    |

  5. To determine the motion of the centre of mass of a system, knowledge o...

    Text Solution

    |

  6. A horizontal force F is applied such that the block remains stationary...

    Text Solution

    |

  7. A girl sits on a rolling chair, when she stretch her arms horizontally...

    Text Solution

    |

  8. Assertion : The moment of inertia of a rigid body reduces to its minim...

    Text Solution

    |

  9. The moment of inertia of rigid body depends only on the mass of the bo...

    Text Solution

    |

  10. The motion of a ceiling fan is rotational only. The motion of a rigi...

    Text Solution

    |

  11. Value of radius of gyration of a body depends on axis of rotation. R...

    Text Solution

    |

  12. A sphere cannot roll on a smooth inclined surface. The motion of a r...

    Text Solution

    |

  13. A ladders is more likely to slip when a person is near the top than wh...

    Text Solution

    |

  14. A disc is rolling on an inclined plane without slipping. The velocity ...

    Text Solution

    |

  15. A sphere is performing pure rolling on a rough horizontal surface with...

    Text Solution

    |

  16. If earth shrink (without change in mass) to half it's present size. Le...

    Text Solution

    |

  17. A disc is rolling on a rough horizontal surface. The instantaneous spe...

    Text Solution

    |

  18. A when a diver dives, the rotational kinetic energy of diver increases...

    Text Solution

    |

  19. Assertion: The velocity of a body at the bottom of an inclind plane of...

    Text Solution

    |

  20. A Moment of inertial of uniform disc and solid cylinder of equal mass ...

    Text Solution

    |