Home
Class 12
PHYSICS
Figure shows a uniform disk that can rot...

Figure shows a uniform disk that can rotate around its center like a merry-go-round. The disk has a radius of 2.00 cm and a mass of 20.0 grams and is initially at rest. Starting at time t = 0, two forces are to be applied tangentially to the rim as indicated, so that at time t = 1.25 s the disk has an angular velocity of 250 rad/s counterclockwise. Force `vecF_(1)` has a magnitude of 0.100 N. What is magnitude `F_(2)` ?

Text Solution

Verified by Experts

0.140 N
Promotional Banner

Topper's Solved these Questions

  • RIGID BODY DYNAMICS - I

    RESNICK AND HALLIDAY|Exercise PRACTICE QUESTIONS (SINGLE CORRECT CHOICE TYPE)|43 Videos
  • RIGID BODY DYNAMICS - I

    RESNICK AND HALLIDAY|Exercise PRACTICE QUESTIONS (MORE THAN ONE CORRECT CHOICE TYPE)|7 Videos
  • RIGID BODY DYNAMICS - I

    RESNICK AND HALLIDAY|Exercise CHECKPOINT|18 Videos
  • RELATIVITY

    RESNICK AND HALLIDAY|Exercise PRACTICE QUESTIONS (Integer Type)|5 Videos
  • RIGID BODY DYNAMICS-II

    RESNICK AND HALLIDAY|Exercise PRACTICE QUESTIONS (Integer Type)|2 Videos

Similar Questions

Explore conceptually related problems

A flywheel of mass 25 kg has a radius of 0.2 m. What force should be applied tangentially to the rim of the flywheel so that it acquires an angular acceleration of 2 "rad s"^(-2) ?

A horizontal 9 kg merry-go-round is a solid disk of radius 1.50 m and is started from rest by a constant horizontal force of 50.0 N applied tangentially to the edge of the disk. The kinetic energy of the disk after 3.00 s is.

A flywheel of mass 25 kg has a radius of 0.2 m. It is making 240 r.p.m. what is the torque necessary to bring it to rest in 20 s ? If the torque is due to a force applied tangentially on the rim of the flywheel, what is the magnitude of the force ?

A disc has mass 'M' and radius 'R'. How much tangential force should be applied to the rim of the disc, so as to rotate with angular velocity 'omega' in time 't' ?

In a playground there is a merry-go-round of mass 120 kg and radius 4 m. The radius of gyration is 3m. A child of mass 30 kg runs at a speed of 5 m/sec tangent to the rim of the merry-go-round when it is at rest and then jumps on it. Neglect friction and find the angular velocity of the merry-go-round and child

A disk can rotate about its central axis like a merry-go-round. Which of the following pairs of values for its initial and final angular positions, respectively, give a negative angular displacement: (a) -3 rad, +5 rad, (b) -3 rad, -7 rad, ( c) 7 rad, -3 rad?

A disc has mass 'M" and radius 'R'. How much tangential force should be applied to the rim of the disc so as to rotate with angular velocity omega in time 't'?

A flywheel of mass 25 kg has a radius of 0.2 m . It is making 240 rpm. What is the torque necessary to bring it to rest in 20 s ? If the torque is due to a force applies tangentially on the rim of the wheel, what is the magnitude of the force ? Assume that mass of flywheel is concentrated at its rim.

RESNICK AND HALLIDAY-RIGID BODY DYNAMICS - I-PROBLEMS
  1. In Fig. 10-64, block 1 has mass m(1)=460g, block 2 has mass m(2)=500g,...

    Text Solution

    |

  2. In Fig. 10-65, a cylinder having a mass of 3.0 kg can rotate about its...

    Text Solution

    |

  3. Figure shows a uniform disk that can rotate around its center like a m...

    Text Solution

    |

  4. In a judo foot-sweep move, you sweep your opponent's left foot out fro...

    Text Solution

    |

  5. Figure shows particles 1 and 2, each of mass m, fixed to the ends of a...

    Text Solution

    |

  6. A pulley, with a rotational inertia of 1.0xx10^(-3)kg*m^(2) about its ...

    Text Solution

    |

  7. (a) If R = 15 cm, M = 350 g, and m = 50 g in Fig. 10-19, find the spee...

    Text Solution

    |

  8. A uniform metal pole of height 30.0 m and mass 100 kg is initially sta...

    Text Solution

    |

  9. A thin rod of length 0.75 m and mass 0.42 kg is suspended freely from ...

    Text Solution

    |

  10. A metre stick is held vertically with one end on the floor and is then...

    Text Solution

    |

  11. A uniform cylinder of radius 12 cm and mass 25 kg is mounted so as to ...

    Text Solution

    |

  12. A tall, cylindrical chimney falls over when its base is ruptured. Trea...

    Text Solution

    |

  13. A uniform spherical shell of mass M = 4.5 kg and radius R = 8.5 cm can...

    Text Solution

    |

  14. Figure shows a rigid assembly of a thin hoop (of mass m and radius R =...

    Text Solution

    |

  15. In unit vector notation, find the net torque about the origin on a par...

    Text Solution

    |

  16. In unit vector notation, find the torque about a point at coordinates ...

    Text Solution

    |

  17. In unit vector notation, what is the torque about the origin on a part...

    Text Solution

    |

  18. A particle moves through an xyz coordinate system while a force acts o...

    Text Solution

    |

  19. Force vecF=(2.0N)hati-(3.0N)hatk acts on a pebble with position vector...

    Text Solution

    |

  20. A force vecF=(6.00hati-4.00hatj)N acts on a particle with position vec...

    Text Solution

    |