Home
Class 10
PHYSICS
A coin is dropped in a lift . It takes t...

A coin is dropped in a lift . It takes time `t_(1)` second to reach the floor when lift is stationary . It takes `t_(2)` second when the lift is moving up with constant acceleration . Then ,

A

`t_(1) gt t_(2)`

B

`t_(1) lt t_(2)`

C

`t_(1) =t_(2)`

D

None

Text Solution

Verified by Experts

The correct Answer is:
A
`t_(1) gt t_(2)`
Promotional Banner

Topper's Solved these Questions

  • LAWS OF MOTION

    FULL MARKS|Exercise Additional Questions (II. Fill in the blanks)|20 Videos

  • LAWS OF MOTION

    FULL MARKS|Exercise Additional Questions (III. State whether the following statements are true or false. Correct the statement if it is false.)|10 Videos

  • LAWS OF MOTION

    FULL MARKS|Exercise TEXTUAL EVALUATION (IX. HOT Questions.)|3 Videos

  • ELECTRICITY

    FULL MARKS|Exercise Additional Questions (VIII Numerical Problems|4 Videos

  • NUCLEAR PHYSICS

    FULL MARKS|Exercise Additional Questions (IX. Additional HOT Questions)|4 Videos

Similar Questions

Explore conceptually related problems

The period of oscillation of a simple pendulum is T in a stationary lift. If the lift moves upwards with an acceleration of 8g, the period will………….

Find the position and velocity of x at time, t = 2 seconds

A person standing oin the floor of an elevator drops as coin. The coin reaches the floor of the elevator in a time t_1 if the elevator is stationary and in the t_2 if it is moving uniformly. Then

A spring balance is attached to the ceiling of a lift. When the lift is at rest spring balance reads 49 N of a body hang on it. If the lift moves: (i) Downward (ii) upward, with an acceleration of 5 ms^(-2) (iii) with a constant velocity. What will be the reading of the balance in each case?

The mass of a lift is 2000 kg. When the tension in the supporting cable is 28000 N, then its .acceleration is:

The angular displacement theta radians of a fly wheel varies with time t seconds and follow the equation theta = 9t^(2) - 2t^(3) . Determine the angular velocity and acceleration of the fly wheel when time t =1 seconds and (ii) The time when the angular acceleration is zero.

An elevator is descending with uniform acceleration.To measure the acceleration, a person in the elevator drops a coin at momen the elevator strts. The coin is 6 ft asbove the floor of the elevator at the time it is dropped. The person observes that the coin strikes the floor in 1 second. Calculate these dta the acceleration of the elevator.

FULL MARKS-LAWS OF MOTION-Additional Questions (I.Choose the correct answer.)
  1. A cricketer catches a ball of mass 150 gm in 0.1s and which is moving ...

    Text Solution

    |

  2. When train stops, the passenger move forward, It is due to …………………….

    Text Solution

    |

  3. A coin is dropped in a lift . It takes time t(1) second to reach the f...

    Text Solution

    |

  4. The force of gravitation is:

    Text Solution

    |

  5. A sattelite in its orbit around earth is weightess on account of its…....

    Text Solution

    |

  6. A body weight 700N on earth. What will be its weight on a planet havin...

    Text Solution

    |

  7. What would be the acceleration due to gravity at another planet, whose...

    Text Solution

    |

  8. At sea level, the value of "g" is maximum at ……………………

    Text Solution

    |

  9. Mechanics is divided into …………………… types.

    Text Solution

    |

  10. Ability of a body to maintain its state of rest or motion is called ……...

    Text Solution

    |

  11. deals with the bodies which are at rest under the action of forces ...

    Text Solution

    |

  12. deals with the motion of bodies without considering the cause of mo...

    Text Solution

    |

  13. deals with the motion of bodies without considering the cause of mo...

    Text Solution

    |

  14. Linear momentum is p=

    Text Solution

    |

  15. The unit of momentum in SI system is .

    Text Solution

    |

  16. Two or more forces of equal or unequal magnitude acting along the same...

    Text Solution

    |

  17. The axis of a fixed edge about which the door is rotated is called .

    Text Solution

    |

  18. The rotating or turning effect of a force about a fixed point or fixed...

    Text Solution

    |

  19. Rotating effect of a couple is known as …………………………

    Text Solution

    |

  20. The amount of force required to produce an acceleration of 1 ms^(-2) i...

    Text Solution

    |