Home
Class 12
PHYSICS
A block of mass 2 kg is placed on the fl...

A block of mass 2 kg is placed on the floor . The coefficient of static friction is `0.4` . If a force of `2.8` N is applied on the block parallel to floor , the force of friction between the block and floor is : (Taking g = `10 m//s^(2)`)

A

2.8N

B

8N

C

2.0N

D

zero

Text Solution

Verified by Experts

The correct Answer is:
A

`f_("max")=20xx0.4=8N`
`therefore f=2.8N`
Promotional Banner

Topper's Solved these Questions

  • NEWTONS LAWS OF MOTION

    ALLEN|Exercise EXERCISE-III|28 Videos
  • NEWTONS LAWS OF MOTION

    ALLEN|Exercise EXERCISE-I|52 Videos
  • NEWTON'S LAWS OF MOTION & FRICTION

    ALLEN|Exercise EXERCISE (JA)|4 Videos
  • RACE

    ALLEN|Exercise Basic Maths (Wave Motion & Dopplers Effect) (Stationary waves & doppler effect, beats)|25 Videos

Similar Questions

Explore conceptually related problems

A block of mass 2 kg is placed on the floor. The coefficient of static friction is 0.4. A force F of 3 N is applied on the block as shown in figure. The force of friction between the block and the floor is (Take g=10 m s^(-2) )

A block of mass 4 kg is kept on a rough horizontal surface. The coefficient of static friction is 0.8. If a force of 19 N is applied on the block parallel to the floor, then the force of friction between the block and floor is

A block of mass 2 kg is placed on the floor. The coefficient of static friction is 0.4.A force F of 2.5 N is applied on the block, as shown. Calculate the force of friction between the block and the floor. ("g = 9.8 ms"^(–2))

A block of mass 2kg is kept on the floor. The coefficient of static friction is 0.4 . If a force F of 2.5N is applied on the block as shown in the figure, the frictional force between the block and the floor will be.

A block of mass 2 kg is at rest on a floor . The coefficient of static friction between block and the floor is 0.54. A horizonatl force of 2.8 N is applied to the block . What should be the frictional force between the block and the floor ? ( take , g = 10 m//s^(2) )

A block of mass 3kg is placed on a rough horizontal surface (mu_(s)=0.4) . A forc eof 8.7N is applied on th eblock. The force of friction between the block and floor is .

A block is lying static on the floor. The maximum value of static frictionalforce on the block is 10 N. If a horizontal force of 8 N is applied to the block, what will be the frictional force on the block ?

On a smooth horizontal surface a block A of mass 10kg is kept. On this block a second block B of mass 5kg is kept. The coefficient of friction between the two blocks is 0.4 .A horizontal force of 30N is applied on the lower block as shown. The force of friction between the blocks is

ALLEN-NEWTONS LAWS OF MOTION-EXERCISE-II
  1. The elevator shown in fig. is descending with an acceleration of 2ms^(...

    Text Solution

    |

  2. Two blocks of masses 6 kg and 4 kg are connected b a rope of mass 2 kg...

    Text Solution

    |

  3. A block of mass 2 kg is placed on the floor . The coefficient of stati...

    Text Solution

    |

  4. What force F must be applied so that m(1) and m(2) are at rest on m(3)...

    Text Solution

    |

  5. A tennis ball is dropped on the floor from a height of 20m. It rebound...

    Text Solution

    |

  6. The frictional force of the air on the body of mass 0.25kg, falling wi...

    Text Solution

    |

  7. A man weighing 100 kg carriesa load of 10kg on his head. He jumps from...

    Text Solution

    |

  8. Two masses of 10kg and 5kg are suspended from a rigid support as shown...

    Text Solution

    |

  9. A ship of mass 3xx10^(2)kg initially at rest is pulled by a force of 5...

    Text Solution

    |

  10. A 150 g ball, moving horizontally at 20m/s was hit straight back to bo...

    Text Solution

    |

  11. A block of mass 15kg is placed on a long trolley. The cofficient of fr...

    Text Solution

    |

  12. A rope lies on atable such that a part of it hangs down the table, whe...

    Text Solution

    |

  13. A block A of mass 2 kg rests on another block B of mass 8 kg which res...

    Text Solution

    |

  14. Two block (A) 2kg and (B) 5kg rest one over the other on a smooth hori...

    Text Solution

    |

  15. A body is placed on an inclined plane and has to be pushed down. The a...

    Text Solution

    |

  16. A car is moving along a straight horizontal road with a speed v(0) . I...

    Text Solution

    |

  17. Three forces P,Q and R are acting at a point in the plane. The angle b...

    Text Solution

    |

  18. The rear side of a truck is open and a box of mass 20kg is placed on t...

    Text Solution

    |

  19. The force required to just move a body up the inclined plane is double...

    Text Solution

    |

  20. A block of mass 0.1 is held against a wall applying a horizontal force...

    Text Solution

    |