Home
Class 11
PHYSICS
A particle moves move on the rough horiz...

A particle moves move on the rough horizontal ground with some initial velocity `V_(0)`. If `(3)/(4)` of its kinetic enegry lost due to friction in time `t_(0)`. The coefficient of friction between the particle and the ground is.

A

`(v_(0))/(2g t_(0))`

B

`(v_(0))/(4g t_(0))`

C

`(3v_(0))/(4g t_(0))`

D

`(v_(0))/(g t_(0))`

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • WORK, POWER AND ENERGY

    DC PANDEY ENGLISH|Exercise B More than One Option is Correct|26 Videos

  • WORK, POWER AND ENERGY

    DC PANDEY ENGLISH|Exercise C Comprehension Type Questions|18 Videos

  • WORK, POWER AND ENERGY

    DC PANDEY ENGLISH|Exercise E Integer Type Questions|11 Videos

  • WORK, ENERGY AND POWER

    DC PANDEY ENGLISH|Exercise MEDICAL ENTRACES GALLERY|33 Videos

Similar Questions

Explore conceptually related problems

A particle is projected directly along a rough plane of inclination theta with velocity u. If after coming to the rest the particle returns to the starting point with velocity v, the coefficient of friction between the partice and the plane is

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.

A block starts moving up an inclined plane of inclination 30^@ with an initial velocity of v_0 . It comes back to its initial position with velocity (v_0)/(2) . The value of the coefficient of kinetic friction between the block and the inclined plane is close to I/(1000) , The nearest integer to I is ____________ .

A positively charged particle of mass m and charge q is projected on a rough horizontal x-y plane surface with z-axis in the vertically upward direction. Both electric and magnetic fields are acting in the region and given by vec E = - E_0 hat k and vec B= -B_0 hat k , respectively. The particle enters into the field at (a_0, 0, 0) with velocity vec v = v_0 hat j . The particle starts moving in some curved path on the plane. If the coefficient of friction between the particle and the plane is mu . Then calculate the (a) time when the particle will come to rest (b) distance travelled by the particle when it comes to rest.

A positively charged particle of mass m and charge q is projected on a rough horizontal x-y plane surface with z-axis in the vertically upward direction. Both electric and magnetic fields are acting in the region and given by vec E = - E_0 hat k and vec B= -B_0 hat k , respectively. The particle enters into the field at (a_0, 0, 0) with velocity vec v = v_0 hat j . The particle starts moving in some curved path on the plane. If the coefficient of friction between the particle and the plane is mu . Then calculate the (a) time when the particle will come to rest (b) distance travelled by the particle when it comes to rest.

A uniform ring of mass 'm' and radius 'R' is projected horizontally with velcoty v_(0) on a rough horizontal floor, so that it starts off with a purely sliding motion and it acquires a pure rolling motion after moving a distance d. If the coefficient of friction between the ground and ring is mu , then work done by the friction in the process is

When a car of 3mass 1000 kg is moving with a velocity of 20ms^(-1) on a rough horizontal road, its engine is switched off. How far does the car move before it comes to rest if the coefficient of kinetic friction between the road and tyres of the car is 0.75 ?

A block A with mass 100kg is resting on another block B of mass 200kg. As shown in figure a horizontal rope tied to a wall hold it. The coefficient of friction between A and B is 0.2 while coefficient of friction between B and the ground is 0.3 . the minimum required force F to start moving B will be.

A block A with mass 100kg is resting on another block B of mass 200kg. As shown in figure a horizontal rope tied to a wall hold it. The coefficient of friction between A and B is 0.2 while coefficient of friction between B and the ground is 0.3 . the minimum required force F to start moving B will be.

A block A with mass 100kg is resting on another block B of mass 200kg. As shown in figure a horizontal rope tied to a wall hold it. The coefficient of friction between A and B is 0.2 while coefficient of friction between B and the ground is 0.3 . the minimum required force F to start moving B will be.

DC PANDEY ENGLISH-WORK, POWER AND ENERGY-A Only One Option is Correct
  1. Kinetic energy of a particle moving in a straight line varies with tim...

    Text Solution

    |

  2. A particle of mass 2 kg starts moving in a straight line with an initi...

    Text Solution

    |

  3. A particle moves move on the rough horizontal ground with some initial...

    Text Solution

    |

  4. Two particles 1 and 2 are allowed to descend on the two frictionless c...

    Text Solution

    |

  5. A body is displaced from (0,0) to (1 m, 1m) along the path x = y by a ...

    Text Solution

    |

  6. A self-propelled vehicle of mass m, whose engine delivers a constant p...

    Text Solution

    |

  7. A body is moved from rest along a straight line by a machine deliverin...

    Text Solution

    |

  8. A forceF = (2hat(i)+5hat(j)+hat(k))N is acting on a particle. The part...

    Text Solution

    |

  9. A vertical spring of force cosntant 100 N//m is attached with a hangin...

    Text Solution

    |

  10. A partical is realeased from the top of two inclined rought surface of...

    Text Solution

    |

  11. System shown in figure is released from rest . Pulley and spring is ma...

    Text Solution

    |

  12. Force acting on a particale is (2hat(i)+3hat(j))N. Work done by this f...

    Text Solution

    |

  13. An object of mass m slides down a hill of arbitrary shape and after tr...

    Text Solution

    |

  14. A block of mass m slides down a rough inclined plane of inclination th...

    Text Solution

    |

  15. A 1.5-kg block is initially at rest on a horizontal frictionless surfa...

    Text Solution

    |

  16. In the above problem, the maximum positive displacement x is

    Text Solution

    |

  17. A block of mass 1 kg is attached to one end of a spring of force const...

    Text Solution

    |

  18. Two block of masses m(1) and m(2) connected by a light spring rest on ...

    Text Solution

    |

  19. A block of mass m is attached with a massless spring of force constant...

    Text Solution

    |

  20. The potential energy of a particle of mass m is given by U=(1)/(2)kx^(...

    Text Solution

    |