Home
Class 12
PHYSICS
A bird is sitting in a large closed cage...

A bird is sitting in a large closed cage which is placed on a spring balance. It records a weight of 25 N. The bird (mass=0.5 kg) flies upward in the cage with an acceleration of `2m//s^(2)`. The spring balance will now record a weight of :-

A

24 N

B

25 N

C

26 N

D

27 N

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • RACE

    ALLEN |Exercise Basic Maths (FRICTION)|13 Videos
  • RACE

    ALLEN |Exercise Basic Maths (WORK POWER & ENERGY)|33 Videos
  • RACE

    ALLEN |Exercise Basic Maths (KINEMATICS)|63 Videos
  • NEWTONS LAWS OF MOTION

    ALLEN |Exercise EXERCISE-III|28 Videos
  • SIMPLE HARMONIC MOTION

    ALLEN |Exercise Example|1 Videos

Similar Questions

Explore conceptually related problems

Ramesh with mass of 65 kg stands on a spring balance in a lift. If the lift moves in upward direction with an acceleration of 3 m/ s^(2) , then the weight of Ramesh will becom e........

The frictional force of the air on the body of mass 0.25kg, falling with an acceleration of 9.2 m//s^(2) will be (g=9.8m//s^(2)) .

A man of mass 60 kg is in a lift and lift is accelerating upwards with acceleration 4 m//s^(2) . Calculate effective weight of man in lift.

A block of mass 20 kg is lying on an inclined plane of angle 30^(@) . In order to make it move upward along the slope with an acceleration of 25 cm/ s^(2) , a horizontal force of 400 N is required to be applied on it. (i) Frictional force on the block is .......N. (ii) Co-efficient of kinetic friction i s .........

On the horizontal surface of a truck (mu=0.6) a block of mass 1 kg is placed. If the truck is accelerating at the rate of 5m//sec^(2) then friction force on the block will be

A block of mass 15 kg is lying on an inclined plane of angle 20^(@) . In order to make it move upward along the slope with an acceleration of 25 cm / s^(2) a horizontal force of 200 N is required to be applied on it. Calculate (i) frictional force on the block and (ii) co-efficient of kinetic friction.

The rear side of a truck is open and a box of mass 20kg is placed on the truck 4m away from the open end mu = 0.15 and g = 10m//s^(2) The truck starts from rest with an acceleration of 2m//s^(2) on a straight road The box will fall off the truck when it is at a distance from the starting point equal to .

A block of mass 15 kg is lying on an inclined plane of angle 30^(@) . In order to make it move upward along the slope with an acceleration 25 cms^(2) , a horizontal force of 200 N is required to be applied on it. Then the frictional force on the block i s (g = 9.8 ms 2)

Tow men of masses m_(1)and m_(2) hold on the opposite ends of a rope passing over a frictionless pulley. The men m_(1) climbs up the pore with an acceleration of 1.2m//s^(2) relative to the rope. The mann m_(2) climbs up the rope with an acceleration of 2m//s^(2) relative to the rope. Find the tension in the rope if m_(1)40 kg and m_(2)=60kg. Also find the time after the time after which they will be at same horizontal level if they start from rest and are initially separted by 5 m.

Two masses of 1 kg and 5 kg are attached to the ends of a massless string passing over a pulley of negligible weight. The pulley itselt is attached to a light spring balance as shown in figure. The masses start moving during this interval, the readcing of spring balance will be-

ALLEN -RACE-Basic Maths (NEWTONS LAWS OF MOTION)
  1. Calculate a & T.

    Text Solution

    |

  2. Calculate a & T.

    Text Solution

    |

  3. Calculate a & T. (masses are in Kg)

    Text Solution

    |

  4. 80 railway wagons all of same mass 5xx10^(3)kg are pulled by an engine...

    Text Solution

    |

  5. A block of mass m is pulled by a uniform chain of mass m tied to it by...

    Text Solution

    |

  6. A sphere is accelerated upwards with the help of a cord whose braking ...

    Text Solution

    |

  7. In a tug of war contest, two men pull on a horizontal rope at the two ...

    Text Solution

    |

  8. A sphere is accelerated upwards with the help of a cord whose braking ...

    Text Solution

    |

  9. A sparrow flying in air sits on a stretched telegraph wire If weight o...

    Text Solution

    |

  10. Two bodies of mass 4kg and 6kg are attached to the ends of a string pa...

    Text Solution

    |

  11. A vector is represented by 5hati+6hatj+4hatk, Its length in XY plane i...

    Text Solution

    |

  12. In the following figure, if the tension in the string AB is 51N, then ...

    Text Solution

    |

  13. If a body with mass(2kg) moving with acceleration that is equal to 5m/...

    Text Solution

    |

  14. In the following figure, the pulley is massless and frictionless. The ...

    Text Solution

    |

  15. In the figure the masses of the blocks A and B are same and each equal...

    Text Solution

    |

  16. A bird is sitting in a large closed cage which is placed on a spring b...

    Text Solution

    |

  17. A body of weight 2 kg is suspended as shown in the figure. The tension...

    Text Solution

    |

  18. An iron black of mass m=500 kg is kept at the back of a truck moving a...

    Text Solution

    |

  19. The concept of inertia is explained in :-

    Text Solution

    |

  20. Select correct statement regarding pseudo force :-

    Text Solution

    |