Home
Class 11
PHYSICS
The wires A and B shown in Fig. are made...

The wires `A` and `B` shown in Fig. are made of the same material and have radii `r_(A)` and `r_(B)`, respectively. The block between them has a mass `m`. When the force `F` is `mg//3`, one of the wires breaks. Then

A

A will break before B is `r_(A)=r_(B)`

B

A will break before B is `r_(A)lt2r_(B)`

C

Either A or B may break if `r_(A)=2r_(B)`

D

The length of A and B must be known to predict which wire will break.

Text Solution

Verified by Experts

The correct Answer is:
A, B, C
Promotional Banner

Topper's Solved these Questions

  • ELASTICITY, SURFACE TENSION AND FLUID MECHANICS

    ALLEN|Exercise Exercise 3 (Assertion & Reason)|32 Videos
  • ELASTICITY, SURFACE TENSION AND FLUID MECHANICS

    ALLEN|Exercise Exercise 3 (Comprehension based questions)|24 Videos
  • ELASTICITY, SURFACE TENSION AND FLUID MECHANICS

    ALLEN|Exercise Exercise 1 (Fluid Statics)|40 Videos
  • CENTRE OF MASS

    ALLEN|Exercise EXERCISE-V B|19 Videos
  • ERROR AND MEASUREMENT

    ALLEN|Exercise Part-2(Exercise-2)(B)|22 Videos

Similar Questions

Explore conceptually related problems

Two solid spheres A and B made of the same material have radii r_(A) and r_(B) respectively . Both the spheres are cooled from the same temperature under the conditions valid for Newton's law of cooling . The ratio of the rate of change of temperature of A and B is

Two rods A and B of the same material and length have radii r_(1) and r_(2) respective. When they are rigidly fixed at one end and twisted by the same torque applied at the other end, the ratio [("the angle of twist at the end of A")/("the angle of twist at the end of B")] equal to

Two wires A and B of same length are made of same material . The figure represents the load F versus extension Deltax graph for the wires. Then

Three blocks are placed as shown in figure. Mass of A, B and C are m_(1), m_(2),"and "m_(3) respectively. The force exerted by block 'C' on 'B' is :-

Two wires A and B have the same cross section and are made of the same material, but the length of wire A is twice that of B . Then, for a given load

The two wires shown in figure are made of the same material which has a breaking stress of 8xx10^8Nm^-2 . The area of cross section of the upper wire is 0.006 cm^2 and that of the lower wire is 0.003 cm^2 . The mass m_1=10 kg , m_2=20kg and the hanger is light. a. Find the maximum load that can be put on the hanger without breaking a wire. Which wire will break first if the load is increased? b. Repeat the above part m_1=10 kg and m_2=36kg .

A long straight wire is coplanar with a current carrying circular loop of radius R as shown in Fig. Current flowing through wire and the loop is I_0 and I, respectively. If distance between centre of loop and wire is r=2R, calculate force of attraction between the wire and the loop.

If two circular discs A and B are of same mass but of radii r and 2r respectively, then the moment of inertia of A is

Two wires have masses in the ratio 3:4. They are made of the same material. Under the same load what is ratio of their elongations ? Explain why?

Wires A and B are made from the same material. A has twice the diameter and three times the length of B . If the elastic limits are not reached, when each is stretched by the same tension, the ratio of energy stored in A to that in B is

ALLEN-ELASTICITY, SURFACE TENSION AND FLUID MECHANICS-Exercise 2 (One or more than one correct answer)
  1. Water coming out of the mouth of a tap and falling vertically in strea...

    Text Solution

    |

  2. There are two identical small holes on the opposite side of a tank co...

    Text Solution

    |

  3. A U-tube of uniform cross section is partially filled with a liquid I....

    Text Solution

    |

  4. A container of a large uniform cross sectional area A strong on horizo...

    Text Solution

    |

  5. A mercury manometer is connected as shown in the figure. The differenc...

    Text Solution

    |

  6. An open pan P filled with water of density (rhow) is placed on a verti...

    Text Solution

    |

  7. A small ball is left in a viscous liquid form very much height correct...

    Text Solution

    |

  8. A cubical block of side a and density rho slides over a fixed inclined...

    Text Solution

    |

  9. A space 2.5cm wide between two large plane surfaces is filled with oil...

    Text Solution

    |

  10. A large drop of oil whose density is less than that of water, floats ...

    Text Solution

    |

  11. If the terminal speed of a sphere of gold (of density 19.5 g//cm ^3 ) ...

    Text Solution

    |

  12. A spherical ball is dropped in a long column of viscous liquid. Which ...

    Text Solution

    |

  13. A small sphere of mass m is dropped from a aheight After it has fallen...

    Text Solution

    |

  14. The wires A and B shown in Fig. are made of the same material and have...

    Text Solution

    |

  15. When a capillary tube is dipped in a liquid, the liquid rises to a hei...

    Text Solution

    |

  16. A massless conical flask filled with a liquid is kepth on t a table in...

    Text Solution

    |

  17. The vessel shown in the figure has a two sections of areas of cross-se...

    Text Solution

    |

  18. A liquid flows through a horizontal tube. The velocities of the liquid...

    Text Solution

    |

  19. A vertical U-tube contains a liquid. The total length of the liquid co...

    Text Solution

    |

  20. A cup filled with water has a hole in the side, through which the liqu...

    Text Solution

    |