Home
Class 12
PHYSICS
A block m is kept stationary on the surf...

A block `m` is kept stationary on the surface of an accelerating cage as shown in figure. At the given instant, study the following statetments regarding the block.

i. Normal reaction performs positive work on the block.
ii. Frictional work done on the block is negative.
iii. No net work is done by normal reaction and friction on the block.
Now mark the correct answer.

A

onlystatement(i)iscorrect.

B

onlystatement(ii)iscorrect.

C

onlystatement(iii)iscorrect.

D

allthestatementcorrect.

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • WORK, POWER, AND ENERGY

    RESNICK AND HALLIDAY|Exercise PRACTICE QUESTIONS (More than one choice correct type)|10 Videos
  • WORK, POWER, AND ENERGY

    RESNICK AND HALLIDAY|Exercise PRACTICE QUESTIONS (Linked Comprehension)|9 Videos
  • WORK, POWER, AND ENERGY

    RESNICK AND HALLIDAY|Exercise PROBLEMS|58 Videos
  • WAVES-I

    RESNICK AND HALLIDAY|Exercise Practice Questions (Integer Type)|4 Videos

Similar Questions

Explore conceptually related problems

(A) : Kinetic friction force is non-conservative in nature . (R) : Net work done by kinetic friction on a block is always completely converted into heat .

Work Done -3( Work Done by Gravity || Work Done by Normal Reaction || Work Done by Friction )

A block of 50 N is pressed normally against a wall as shown. The frictional force acting on the block is : ]

A block of mass m is kept on a platform which starts from rest with constant acceleration g/4 upward, as shown in the figure. Work done by normal reaction on block in time t is:

A block of mass m is kept on a platform which starts from rest with constant acceleration g/2 upward, as shown in fig. Work done by normal reaction on block in time t is :

A block of mass m is kept in an elevation which starts moving downward with an acceleration 'a' as shown in figure. The block is observed by two observers A and B for a time interval t_(0) . . According to observer B , the net work done on the block is :

A block of mass 1 kg is pulled slowly along the curve path ACB by a tangential force as shown in figure. The magnitude of work done by the frictional force when the block moves from A to B is

A block of mass M is kept on a platform which is accelerated upward with a constant acceleration 'a' during the time interval T. The work done by normal reaction between the block and platform is

RESNICK AND HALLIDAY-WORK, POWER, AND ENERGY-PRACTICE QUESTIONS (Single Correct Choice Type)
  1. A skier slides horizontally along the snow for a distance of 21 m befo...

    Text Solution

    |

  2. An automobile approaches a barrier at a speed of 20 m/s along a level ...

    Text Solution

    |

  3. A 1900-kg car experiences a combined force of air resistance and frict...

    Text Solution

    |

  4. A block m is kept stationary on the surface of an accelerating cage as...

    Text Solution

    |

  5. A racing car with a mass of 500.0 kg starts is from rest and completes...

    Text Solution

    |

  6. A tennis ball dropped on a barizoontal smooth surface , it because bac...

    Text Solution

    |

  7. A 1.00xx10^(2) kg crate is being pushed across a horizontal floor by a...

    Text Solution

    |

  8. The potential energy of a 1 kg particle free to move along the x- axis...

    Text Solution

    |

  9. A 1500-kg elevator moves upward with constant speed through a vertica...

    Text Solution

    |

  10. Two balls of equal size are dropped from the same height from the roof...

    Text Solution

    |

  11. A woman stands on the edge of a cliff and throws a stone vertically do...

    Text Solution

    |

  12. A stone rolls off the roof of a School hall and falls vartically. Just...

    Text Solution

    |

  13. A skier leaves the top of a slope with an initial speed of 5.0 m/s. He...

    Text Solution

    |

  14. A 55.0-kg skateboarder starts out with a speed of 1.80 m/s. He does +8...

    Text Solution

    |

  15. A particle which is constant to move along the x- axis , is subjected ...

    Text Solution

    |

  16. A bullet fired into a fixed target loses half of its velocity after pe...

    Text Solution

    |

  17. A particle of mass m is moving in a horizontal circle of radius r, und...

    Text Solution

    |

  18. The potential energy function for a diatomic molecule is U(x) =(a)/(x^...

    Text Solution

    |

  19. A block is dropped from a high tower and is falling freely under the i...

    Text Solution

    |

  20. If the potential energy of a gas molecule is U=(M)/(r^(6))-(N)/(r^(12)...

    Text Solution

    |