Home
Class 11
PHYSICS
A horizontal circular platform of radius...

A horizontal circular platform of radius 0.5 m and mass axis. Two massless spring toy-guns, each carrying a steel ball of mass 0.05 kg are attached to the platform at a distance 0.25m from the centre on its either sides along its diameter (see figure). Each gun simultaneously fires the balls horizontally and perpendicular to the diameter in opposite directions. After leaving the platform, the balls have horizontal speed of `9ms^(-1)` with respect to the ground. The rotational speed of the platform in `rad s^(-1)` after the balls leace the platform is

Promotional Banner

Topper's Solved these Questions

  • System of particles & rotational Motion

    SL ARORA|Exercise EXERCISE|353 Videos

  • ROTATIONAL MOTION

    SL ARORA|Exercise Problem for self practice|90 Videos

  • Thermal Properties of Matter

    SL ARORA|Exercise Exercise|449 Videos

Similar Questions

Explore conceptually related problems

A uniform horizontal circular platform of mass 200kg is rotating at 5 rpm about vertical axis passing through its centre. A boy of mass 80kg is standing at its edge. if boy moves to centre of platform, find out final angular speed

An elevator platform is going up at a speed of 20 m//s and during its upward motion a small ball of 50 g mass, falling in downward direction, strikes the platform at speed 5 m//s . Find the speed with which the ball rebounds.

A steel ball of mass 0.5 kg is dropped from a height of 4 m on to a horizontal heavy steel slab. The collision is elastic and the ball rebounds to its original height. Calculate the impulse delivered to the ball during impact.

A circular platform is free to rotate in a horizontal plane about a vertical axis passing through its centre. A tortoise is sitting at the edge of the platform. Now the platform is given an angular velocity omega_(0) . When the tortoise move along a chord of the platform with a constant velocity (with respect to the platform),

Three boys are standing on a horizontal platform of mass 170kg as shown in figure. The exchange their position as shown inthe figure. Distance moved by the platform is:

A man of mass m_1 is standing on a platform of mass m_2 kept on a smooth horizontal surface. The man starts moving on the platform with a velocity v_r relative to the platform. Find the recoil velocity of platform.

A sphercial ball of mass 5kg is resting on a plane with angle of inclination 30^(@) with respect to the horizontal as shown in the figure. The ball is held in place by a rope attached horizontally to the top of the ball and to the slope. The frictional force acting on the ball is

A ball of mass m is projected from ground making an angle q to the horizontal. There is a horizontal wind blowing in the direction of motion of the ball. Due to wind the ball experiences a constant horizontal force of (mg)/(sqrt(3)) in direction of its motion. Find theta for which the horizontal range of the ball will be maximum.

A kid of mass M stands at the edge of a platform of radius R which can be freely rotated about its axis. The moment of inerti of the platform is I . The system is at rest when a friend throws as ball of mas mand the kid cathces it. If the velocity of the ball is v horiontally along the tangent to the edge of the platform when it was caught by the kid find the angular speed of the platform after the event.

SL ARORA-System of particles & rotational Motion-EXERCISE
  1. Satement-1: two cylinder one hollow (metal) and the other side (wood) ...

    Text Solution

    |

  2. The equations x^2 +5x^2 +px +q=0 and x^3+ 7xa+ px+ r =0have two roots ...

    Text Solution

    |

  3. Two discs A and B are mounted coaxiallay on a vertical axle. The discs...

    Text Solution

    |

  4. Two discs A and B are mounted coaxially on a vertical axle. The discs ...

    Text Solution

    |

  5. A uniform thin cylindrical disk of mass M and radius R is attaached to...

    Text Solution

    |

  6. A uniform thin cylindrical disk of mass M and radius R is attaached to...

    Text Solution

    |

  7. The general motion of a rigid body can be considered to be a combinati...

    Text Solution

    |

  8. The general motion of a rigid body can be considered to be a combinati...

    Text Solution

    |

  9. Two blocks A and B, each of mass m, are connected by a spring of force...

    Text Solution

    |

  10. A frame of reference that is accelerated with respect to an inertial f...

    Text Solution

    |

  11. One twirls a circular ring (of mass and radius ) near the tip of one’s...

    Text Solution

    |

  12. A ring of mass 1kg and radius 1m is moving with a velocity of 1m//s by...

    Text Solution

    |

  13. Four solid sphereas each of diameter sqrt(5) cm and mass 0.5 kg are pl...

    Text Solution

    |

  14. A binary star consists of two stars A(mass 2.2 Ms) and B (mass 11 Ms)...

    Text Solution

    |

  15. A uniform circular disc of mass 50kg and radius 0.4 m is rotating wi...

    Text Solution

    |

  16. A lamina is made by removing a small disc of diameter 2R from a bigg...

    Text Solution

    |

  17. A horizontal circular platform of radius 0.5 m and mass axis. Two mass...

    Text Solution

    |

  18. The densitis of two solid spheres A and B of the same radii R very wit...

    Text Solution

    |

  19. In the List-I below, four different paths of a particle are given as f...

    Text Solution

    |

  20. A ring and a disc are initially at rest, side by side, at the top of a...

    Text Solution

    |