Home
Class 12
PHYSICS
The coefficient of static friction betwe...

The coefficient of static friction between a small coin and the surface of a turntable is 0.30 . The turntable rotates at `2 rad s^(-1)`. What is maximum distance from the centre of the turntable at which the coin will not slide ?

A

7.5 m

B

1.5 m

C

0.15 m

D

0.75 m

Text Solution

Verified by Experts

The correct Answer is:
4
`mu mg =m omega^(2) R `
`R=(mug)/(omega^(2))=(0.3xx10)/4=0.75`
Promotional Banner

Topper's Solved these Questions

  • TEST PAPERS

    BANSAL|Exercise PHYSICS PART (A)|32 Videos

  • TEST PAPERS

    BANSAL|Exercise PHYSICS PART (B)|3 Videos

  • TEST PAPERS

    BANSAL|Exercise PHYSICS PART- C|4 Videos

  • SEMICONDUCTORS

    BANSAL|Exercise CBSE Question|32 Videos

Similar Questions

Explore conceptually related problems

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

A small coin of mass 80g is placed on the horizontal surface of a rotating disc. The disc starts from rest and is given a constant angular acceleration alpha=2rad//s^(2) . The coefficient of static friction between the coin and the disc is mu_(s)=3//4 and cofficient of kinetic friction is mu_(k)=0.5 . The coin is placed at a distance r=1m from the centre of the disc. The magnitude of the resultant force on the coin exerted by the disc just before it starts slipping on the disc is

A small coin of mass 40 g is placed on the horizontal surface of a rotating disc. The disc starts from rest and is given a constant angular acceleration alpha="2 rad s"^(-2) . The coefficient of static friction between the coin and the disc is mu_(s)=3//4 and the coefficient of kinetic friction is mu_(k)=0.5. The coin is placed at a distance r=1m from the centre of the disc. The magnitude of hte resultant force on the coin exerted by the disc just before it starts slipping on the disc is :

The coefficient of static friction between the two blocks is 0.363. What is the acceleration of block 1 so that block 2 does not fall ?

Two equal masses m are attached by a string. One mass lies at radial distance r from the centre of a horizontal turntable which rotates with constant angular velocity omega=2 rad s(1) , while the second hangs from the string inside the tumtable's hollow spindle (see fig.) The coefficient of static friction between the turntable and the mass lying on it is mu_(s)=0.5 . The maximum and minimum values of radius such that the mass lying on the turntable does not slide are r_("max")+r_("min") in meter is

A body Is placed on a turntable. The friction coefficient between the body and the table is mu . (a) If turntable rotates at constant angular speed omega , find the maximum value of omega for which the block will not slip. (b) if the angular speed is increased uniformly from rest with an angular acceleration alpha , at what speed will the block slip?

The coefficient of static and dynamic friction between a body and the surface are 0.75 and 0.5 respectively. A force is applied to the body to make it just slide with a constant acceleration which is

The coefficient of static friction between the bodies A and B is 0.30. Determine minimum stopping distance that the body A can have from a speed of 70 km/h with constant deceleration if the body B is not to slip forward

The coin is notating with a plate without sliding If the coefficient of friction between the coin and plane is mu = 0.75 the friction between the coin and plate is If the plate is rotating along and the coin is gently placed on the rotating plate, the frictional force on the coin is

BANSAL-TEST PAPERS-PHYSICS
  1. A particle is displaced from a position 2hati-hatj+hatk (m) to another...

    Text Solution

    |

  2. An infinite no of bricks are placed one over the other as shown in the...

    Text Solution

    |

  3. The coefficient of static friction between a small coin and the surfac...

    Text Solution

    |

  4. Find the coordinates of centre of mass of a uniform semicircular close...

    Text Solution

    |

  5. A particle is constrained to move in a circle with a 10 -meter radius....

    Text Solution

    |

  6. Two ice-skaters of mass 120 kg and 200 kg are initially hugging on a f...

    Text Solution

    |

  7. A skier plane to ski a smooth fixed hemisphere of radius R . He starts...

    Text Solution

    |

  8. An artillery shell is fired so as to land in one piece at x=1000m. Ins...

    Text Solution

    |

  9. In the figure shown the spring constant is K the mass of the upper dis...

    Text Solution

    |

  10. A simple pendulum swings with angular amplitude theta. The tension in ...

    Text Solution

    |

  11. Two particles of equal mass 'm' are projected from the ground with spe...

    Text Solution

    |

  12. Different location of a cyclist moving with constant speed on an road ...

    Text Solution

    |

  13. Two masses of 1 gm and 4 gm are moving with equal kinetic energies. Th...

    Text Solution

    |

  14. A thin uniform steel chain is 10 meters long with a mass density of 2 ...

    Text Solution

    |

  15. A man of 80 kg attempts to jump from the small boat of mass 40 kg on t...

    Text Solution

    |

  16. On a disc fixed in a vertical plane, we have a string with its one end...

    Text Solution

    |

  17. In a cricket match, a bowler piecks up a ball (0.5 kg ) from ground. H...

    Text Solution

    |

  18. The diagram below is a snapshote of three cars all moving couterclockw...

    Text Solution

    |

  19. The diagram below is a snapshote of three cars all moving couterclockw...

    Text Solution

    |

  20. The diagram below is a snapshote of three cars all moving couterclockw...

    Text Solution

    |