Home
Class 11
PHYSICS
A mass of 1 kg is suspended by a thread....

A mass of 1 kg is suspended by a thread. It is
(i) lifted up with an acceleration of 4.9m`cdot s^(-2)`.

A

`3:1`

B

`1:2`

C

`1:3`

D

`2:1`

Text Solution

Verified by Experts

Weight of the body = mg (downwards)
Tension on the thread = T (upwards)
`therefore` Resultant force acting on the body = T - mg (upward)
If a si the upward acceleration then from F = ma we get.
T - mg = ma or, T = m(g + a)
Promotional Banner

Topper's Solved these Questions

  • NEWTON'S LAWS OF MOTION

    CHHAYA PUBLICATION|Exercise EXAMINATION ARCHIVE WITH SOLUTIONS (WBJEE)|5 Videos

  • NEWTON'S LAWS OF MOTION

    CHHAYA PUBLICATION|Exercise EXAMINATION ARCHIVE WITH SOLUTIONS (AIPMT)|3 Videos

  • NEWTON'S LAWS OF MOTION

    CHHAYA PUBLICATION|Exercise INTEGER ANSWER TYPE|2 Videos

  • NATURE OF VIBRATION

    CHHAYA PUBLICATION|Exercise EXERCISE (CBSE SCANNER)|2 Videos

  • NEWTONIAN GRAVITATION AND PLANETARY MOTION

    CHHAYA PUBLICATION|Exercise CBSE SCANNER|19 Videos

Similar Questions

Explore conceptually related problems

A mass of 1 kg is suspended by a thread. It is :- lowered with an acceleration of 4.9 ms^-2 . The ratio of the tensions on the

A man of mass 70 kg is sitting in a motor car. The car is moving with an acceleration of 5 m cdot s^(-2) . What is the gravitational force on the man? [ g = 9.8 m cdot s^(-2) ]

A man of mass 98 kg, is standing on a weighing machine in a lift. What will be the readings of the weighing machine in the following cases: (i) the lift ascends at 100 cm per second. (ii) The lift descends with an acceleration of 30 cm cdot s^(-2) ? [ g = 980 cm cdot s^(-2) ]

CHHAYA PUBLICATION-NEWTON'S LAWS OF MOTION-EXAMINATION ARCHIVE WITH SOLUTIONS(WBCHSE)
  1. A block of mass M is pulled along a frictionless horizontal suface by ...

    Text Solution

    |

  2. Two blocks A and B are standing side-by-side touching each other, on a...

    Text Solution

    |

  3. Two blocks A and B are standing side-by-side touching each other, on a...

    Text Solution

    |

  4. A gun is mounted on a platform fitted with frictionless wheels. The ma...

    Text Solution

    |

  5. Which is easier to lift in the air, 1 kg steel or 1 kg of wool?

    Text Solution

    |

  6. What is the difference between impulse of a force and impulsive force?

    Text Solution

    |

  7. State the law of conservation of momentum.

    Text Solution

    |

  8. Establish Newton's third law from Newton's second law.

    Text Solution

    |

  9. A batsman deflects a ball by an angle of 45^(@) without changing its i...

    Text Solution

    |

  10. In which frame of reference Newton's first law of motion is applicable...

    Text Solution

    |

  11. A balloon of mass m descending with an acceleration a. What mass be dr...

    Text Solution

    |

  12. A mass of 1 kg is suspended by a thread. It is (i) lifted up with an...

    Text Solution

    |

  13. A mass of 1 kg is suspended by a thread. It is lifted up with an accel...

    Text Solution

    |

  14. Define inertial and non-inertial frames of reference with example.

    Text Solution

    |

  15. Establish Newton's third law of motion from the principle of conservat...

    Text Solution

    |

  16. A balloon of mass m is descending with an acceleration alpha. What mas...

    Text Solution

    |

  17. Define inertial frame of reference.

    Text Solution

    |