Home
Class 12
PHYSICS
An insect crawls up a hemisherical surfa...

An insect crawls up a hemisherical surface very slowly .The coefficient of friction between the insert and the surface is `1//3` If the line joining the center of the hemisherical surface of the insert makes on angle a with the verticle , find the maximum possible value of a

A

`cos alpha=3`

B

`tan alpha=3`

C

`sec alpha=3`

D

`"cosec" alpha=3`

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

Similar Questions

Explore conceptually related problems

An insect craws up a hemispherical surface very slowly (see fig.). The coefficient of friction between the insect and the surface is 1//3 . If the line joining the center of the hemispherical surface to the insect makes an angle alpha with the vertical, the maximum possible value of alpha is given by

An insect craws up a hemispherical surface very slowly (see fig.). The coefficient of friction between the insect and the surface is 1//3 . If the line joining the center of the hemispherical surface to the insect makes an angle alpha with the vertical, the maximum possible value of alpha is given by

An insect craws up a hemispherical surface very slowly (see fig.). The coefficient of friction between the insect and the surface is 1//3 . If the line joining the center of the hemispherical surface to the insect makes an angle alpha with the vertical, the maximum possible value of alpha is given by

An insect crawls up a hemispherical surface as shown (see the figure) the coefficient offriction between the insect and the surface is 1/3. If the line joining the centre of the hemisperical surface to the insect makes an angle theta with the vertical, the maximum possible value of theta is given by

The coefficient of friction between two surface is 0.2. The maximum angle of friction is

A particle is pulled along a curved surface very slowly. The coefficient of kinetic friction between the particle and surface is 0.4 . The heat generated during the pulling of the particle from the lowest point A to the topmost point B equals (The mass of the particle is 5 g )

If the coefficient of friction between M and the inclined surfaces is mu = 1//sqrt(3) find the minimum mass m of the rod so that the of mass M = 10 kg remain stationary on the inclined plane

A heavy uniform metal chain is kept on the surface of a horizontal table. The coefficient of friction between the chain and the table surface is 0.02 . Find the maximum fraction of length of the chain that could hung over on one edge of the table ?

A solid sphere of mass m is lying at rest on a rough horizontal surface. The coefficient of friction between the ground and sphere is mu . The maximum value of F , so that the sphere will not slip, is equal to

Asseration : A block of mass m starts moving on a rough horizontal surface with a velocity v. It stops due to friction between the block and the surface after moving through a ceratin distance. The surface is now tilted to an angle of 30^@ with the horizontal and same block is made to go up on the surface with the same initial velocity v. The decrease in the mechanical energy in the second situation is small than the first situation. Reason : The coefficient of friction between the block and the surface decreases with the increase in the angle of inclination.

ALLEN-CIRCULAR MOTION-EXERCISE(O-1)
  1. The value of n so that vectors 2hati+3hatj-2hatk, 5hati+nhatj+hatk and...

    Text Solution

    |

  2. If a and b are two vectors.then the value of (a+b)xx(a-b) is

    Text Solution

    |

  3. "|"oversetrightarrow(a).oversetrightarrow(b)"|"=sqrt3"|"oversetrightar...

    Text Solution

    |

  4. A body is executing circular motion in the vertical plane containing d...

    Text Solution

    |

  5. If the magnitude of velocity in the previous question is decreasing wi...

    Text Solution

    |

  6. The direction of angular acceleration of a body moving in a circle in ...

    Text Solution

    |

  7. The second's hand of watch has length 6 cm. Speed of end point and mag...

    Text Solution

    |

  8. A point P moves in a counter-clockwise direction on a circular path as...

    Text Solution

    |

  9. Spotlight S rotates in a horizontal plane with constant angular veloci...

    Text Solution

    |

  10. Which fo the following statements is false for a particle moving in a ...

    Text Solution

    |

  11. A particle is moving in a circle:

    Text Solution

    |

  12. A particle of mass m is tied to light string and rotated with a speed ...

    Text Solution

    |

  13. Which vector in the figures best represents the acceleration of a pend...

    Text Solution

    |

  14. A conical pendulum is moving in a circle with angular velocity omega a...

    Text Solution

    |

  15. A point mass m is suspended from a light thread of length l, fixed at ...

    Text Solution

    |

  16. A long horizontal rod has a bead which can slide ale its length and in...

    Text Solution

    |

  17. An insect crawls up a hemisherical surface very slowly .The coefficien...

    Text Solution

    |

  18. The maximum velocity ( in m s^(-1) ) with which a car driver must trav...

    Text Solution

    |

  19. A particle is acted upon by a force of constant magnitude which is alw...

    Text Solution

    |

  20. A car runs around a curve of radius 10m at a constant speed of 10ms^(-...

    Text Solution

    |