Home
Class 11
PHYSICS
A dynamometer D is attached to two bodie...

A dynamometer D is attached to two bodies of masses M=6 kg and m=4 kg. Force F=20 N and f=10N are applied to the masses as shown. The dynometer reads

A

10N

B

20N

C

6 N

D

14 N

Text Solution

Verified by Experts

The correct Answer is:
D
(d) Acceleration of system,
`a=(F-f)/(M+m)=(20-10)/(6+4)=1 ms^(-2)" " ` (towards left)
Let `F_(0)` be the reading of dynamometer, then equation of motion of mass m would be,
`implies F_(0)=f+ma=10+(4)(1)=14N`
Promotional Banner

Topper's Solved these Questions

  • LAWS OF MOTION

    DC PANDEY|Exercise Assertion and reason|28 Videos

  • LAWS OF MOTION

    DC PANDEY|Exercise Match the columns|7 Videos

  • LAWS OF MOTION

    DC PANDEY|Exercise Check point 5.4|20 Videos

  • KINEMATICS 1

    DC PANDEY|Exercise INTEGER_TYPE|15 Videos

  • LAWS OF THERMODYNAMICS

    DC PANDEY|Exercise Level 2 Subjective|18 Videos

Similar Questions

Explore conceptually related problems

A dynamometer D, which is a device used to measure force, is attached to two blocks of masses 6 kg and 4 kg. Forces of 20 N and 10 N are applied on the blocks as shown in the figure. The reading of the dynamometer is

A dynomometer D (a force meter ) is attached to two masses M = 10 kg and m = 1 kg . Force F = 2 kg f and f = 1 kgf are applied to the masses . What will applied to the masses . What will the dynamometer show if : (a) F is applied to M and f ot m (b) F is applied to m and f to M (c) if M = m = 5 kg .

A dynamometer D is attached to two blocks of masses 6 kg and 4 kg as shown in the figure. The reading of the dynamometer is

Two bodies of masses 3kg and 2kg are connected by a spring balance Two forces of 10N and 5N are applied on the blocks as shown The reading of the spring balance (in newton) would be .

The force of attraction between two bodies of masses 100 kg and 1000 Kg separated by a distance of 10 m is

Two blocks of masses 2 kg and 4kg are connected through a massless inextensible string. The co-efficient of fricition between 2kg block and ground is 0.4 and the coefficient of friction between 4kg block and ground is 0.6. The forces F_(1)=10N and F_(2)=20N are applied on the blocks as shown in the figure. Calculate the frictional force between 4 kg block and ground (Assume initially the tension in the string was just before forces F_(1) and F_(2) wer applied).

Force of 4 N is applied on a body of mass 20 kg. The work done in 3rd second is

A block of mass 10 kg is placed on a horizontal surface as shown in the figure and a force F = 100 N is applied on the block as shown, in the figure. The block is at rest with respect to ground. If the contact force between block and ground is 25n (in Newton) then value of n is : (Take g = 10 m//s^(2))

DC PANDEY-LAWS OF MOTION-Chapter exercises (A) Taking it together
  1. Two blocks of masses m and 2 m are placed one over the other as shown ...

    Text Solution

    |

  2. If a body looses half of its velocity on penetrating 3 cm in a wooden ...

    Text Solution

    |

  3. A ball is moving towards the wall as shown in diagram then momentum is...

    Text Solution

    |

  4. Two weights w(1) and w(2) are suspended from the ends of a light strin...

    Text Solution

    |

  5. A dynamometer D is attached to two bodies of masses M=6 kg and m=4 kg....

    Text Solution

    |

  6. Two blocks are connected over a massless pulley as shown in figure. Th...

    Text Solution

    |

  7. A block of mass 5 kg resting on a horizontal surface is connected by a...

    Text Solution

    |

  8. A block of mass 3kg is at rest on a rough inclined plan as shown in th...

    Text Solution

    |

  9. Two block of masses M and m are connected to each other by a massless ...

    Text Solution

    |

  10. An insect crawls up a hemispherical surface very slowly (see the figur...

    Text Solution

    |

  11. A block of mass m lying on a rough horizontal plane is acted upon by a...

    Text Solution

    |

  12. In the figure shown if coefficient of friction is mu, then m(2) will s...

    Text Solution

    |

  13. A block of mass M rests on a rough horizontal surface as shown. Coeffi...

    Text Solution

    |

  14. Two blocks A and B each of mass m are placed on a smooth horizontal su...

    Text Solution

    |

  15. A wedge of mass 2m and a cube of mass m are shown in figure. Between c...

    Text Solution

    |

  16. If the coefficient of friction between all surface figure is 0.4 then...

    Text Solution

    |

  17. Block B moves to the right with a constant velocity v(0). The velocity...

    Text Solution

    |

  18. A sphere of mass m, is held between two smooth inclined walls. For sin...

    Text Solution

    |

  19. A pendulum of mass m hangs from a support fixed to a trolley. The dire...

    Text Solution

    |

  20. A uniform rope of length L meters is lying over a table. If the coeffi...

    Text Solution

    |