Home
Class 12
PHYSICS
the coefficient of friction between the...

the coefficient of friction between the rubber tyres and the roadway is 0.25 . Find the maximum speed with which a car can be driven round a curve of radius 20 m without skidding

A

`7 m//s`

B

`8 m//s`

C

`9 m//s`

D

`10 m//s`

Text Solution

Verified by Experts

The correct Answer is:
A

`v=sqrt mu r g =sqrt(0.25xx20xx9.8)`
`=sqrt 49=7 m//s`
Promotional Banner

Topper's Solved these Questions

  • ATOMS, MOLECULES AND NUCLEI

    NIKITA PUBLICATION|Exercise MCQs|443 Videos
  • COMMUNICATION SYSTEMS

    NIKITA PUBLICATION|Exercise Multiple Choice Questions (Examples for Practice)|8 Videos

Similar Questions

Explore conceptually related problems

The coefficient of friction between the tyres and the road is 0.25. The maximum speed with which a car can be driven round a curve of radius 40 m without skidding is (assume g = 10 ms^(-2) )

The coefficient of friction between the tyres and the road is 0.1. The maximum speed with which a cyclist can take a circular turn of radius 3 m without skidding is ("Take g"=10ms^(-2))

A circular race track is banked at 45^(@) and has a radius of 40 m. at what speed does a car have no tendency to slip? If the coefficient of friction between the wheels and the track is 1/2 , find the maximum speed at which the car can travel round the track without skidding.

Assuming the coefficient of friction between the road and tyres of a car to be 0.5, the maximum speed with which the car can move round a curve of 40.0 m radius without slipping, if the road is unbanked, should be

A car has to move on a level turn of radius 45 m. If the coefficient of static friction between the tire and the road is mu_s=2.0, find the maximum speed the car can take without skidding.

The maximum speed with which a vehicle can be safely driven along curved road of radius r, banked at angle theta is

A car is taking a turn of radius 400 m on a horizontal circle . Coefficient of friction between the ground and tyres of car is 0.2 . Find the maximum speed with a safe turn can be taken

A circular racetrack of radius 300 m is banked at an angle of 15^(@) If the coefficient of friction between the wheels of a race car and the road is 0.2 what is the (a) optimum speed of the race car to avoid wear and tear on its tyres , and (b) maximum permissible speed to aviod slipping ?

The centre of gravity of a loaded texi is 1.5 m above the ground, and the distance between the wheels is 2m . What is the maximum speed with which it can go round an unbanked curve of radius 100 m without being turned upside down. What minimum value of coefficient of friction is needed at this speed ?

NIKITA PUBLICATION-CIRCULAR MOTION-Multiple Choice Question
  1. An unbanked curve has a radius of 60m. The maximum speed at which a ca...

    Text Solution

    |

  2. A 100 kg car is moving with a maximum velocity of 9 m//s across a circ...

    Text Solution

    |

  3. the coefficient of friction between the rubber tyres and the roadway ...

    Text Solution

    |

  4. The radius of curvature of railway line at a place is 200 m. If the d...

    Text Solution

    |

  5. A small ball descibes a horozontal circle on the smooth inner surface ...

    Text Solution

    |

  6. A road is 10 m wide . Its radius of curvature is 50 m .The outer edge ...

    Text Solution

    |

  7. A car is travelling at 36 kmph on a road . The maximum turning radius ...

    Text Solution

    |

  8. At what angle should a road be banked so that the vehicle may take a b...

    Text Solution

    |

  9. A simple pendulum of length 1 m the bob performs circular motion in ho...

    Text Solution

    |

  10. In the above problem, the centripetal acceleration experienced by the ...

    Text Solution

    |

  11. A car is moving in a circular horizontal track of radius 10 m with a c...

    Text Solution

    |

  12. Each rod of a centrifugal governor is 10 cm long then the number of re...

    Text Solution

    |

  13. A simple pendulum has a length l . What minimum velocity should be imp...

    Text Solution

    |

  14. A bob is suspended from an ideal string makes an angle 60^(@) to the v...

    Text Solution

    |

  15. A pendulum bob on a 2 m string is displaced 60^(@) from the verticle ...

    Text Solution

    |

  16. Length of a simple pendulum is 2 m and mass of its bob is 0.2 kg .If t...

    Text Solution

    |

  17. A particle describes a horizontal circle on the smooth inner surface o...

    Text Solution

    |

  18. A particle moving in a verticle circle its

    Text Solution

    |

  19. Kinetic energy of a body moving in verticle ircle is

    Text Solution

    |

  20. When a particle is moved , in a verticle it has

    Text Solution

    |