Home
Class 12
PHYSICS
A cuboidal elevator cabon is shown in th...

A cuboidal elevator cabon is shown in the figure. A ball is thrown from point A on the floor of cabon when the elevator is falling under gravity. The plane of motions is ABCD and the angle of projection of the ball with AB, relative to elevator, if the ball collides with point C, is `alpha`. Then find the value of `tan alpha`.

Text Solution

Verified by Experts

The correct Answer is:
5
Promotional Banner

Topper's Solved these Questions

Similar Questions

Explore conceptually related problems

A particle is projected from point A on plane AB, so that AB=(2u^2tantheta)/(gsqrt3) in the figure as shown. If u is the velocity of projection, find angle theta .

A ball is projected from point A with velocity 20 m/s prependicular to the inclined plane as shown in figure. What is the range of the ball on the inclined plane ?

An open elevator is ascending with constant speed v=10m//s. A ball is thrown vertically up by a boy on the lift when he is at a height h=10m from the ground. The velocity of projection is v=30 m//s with respect to elevator. Find (a) the maximum height attained by the ball. (b) the time taken by the ball to meet the elevator again. (c) time taken by the ball to reach the ground after crossing the elevator.

A ball is projected from point A with velocity 10 ms^(-1) perpendicular to the inclined plane as shown in figure. Range of the ball on the inclined plane is

There is a 7m high statue standing on a cliff. At a point P on the ground, the angle of elevation of the foot of the statue is alpha . After walking 34 metres towords the cliff from that point, the angle of elevation of the top of the statue is (90^(@)-alpha) , find the height of the cliff if tanalpha=1/2 .

A train is moving on a track at 30ms^-1 . A ball is thrown from it perpendicular to the direction of motion with 30 ms^-1 at 45^@ from horizontal. Find the distance of ball from the point of projection on train to the point where it strikes the ground.

A projectile is aimed at a mark on a horizontal plane through the point of projection and falls 6 m short when its elevation is 30° but overshoots the mark by 9 m when its elevation is 45^@ . The angle of elevation of projectile to hit the target on the horizontal plane is :

A ball is projected from a point A with some velocity at an angle 30^@ with the horizontal as shown in (Fig. 5.204). Consider a target at point B . The ball will hit the target if it thrown with a velocity v_0 equal to. .

A cylindrical hall has a horizontal smooth floor. A ball is projected along the floor from A point on the wall in a direction making an angle theta with the radius through the point the ball returns bak to the initial point after two impacts with the wall. if the coefficient of restitution is e than tan^(2)theta will be

A ball is thrown from a roof top at angle of 40^(@) above the horizontal. It hits the ground a few seconds later. At what point during its motion. Does the ball have (a) greatest speed (b) smallest speed (c ) greatest acceleration ? Explain.

ALLEN-KINEMATICS-2D-Exercise (S-1)
  1. A particle is projected in the x-y plane with y-axis along vertical. T...

    Text Solution

    |

  2. A ball is thrown horizontally from a cliff such that it strikes the gr...

    Text Solution

    |

  3. A Bomber flying upward at an angle of 53^(@) with the vertical release...

    Text Solution

    |

  4. A ball is projected at an angle of 30^(@) above with the horizontal fr...

    Text Solution

    |

  5. A ball is dropped from rest from a tower of height 5m. As a result of ...

    Text Solution

    |

  6. A tank is initially at a perpendicular distance BT=360 m from the plan...

    Text Solution

    |

  7. A Rajput soldier sits on a horse next to a river. Across the river the...

    Text Solution

    |

  8. A ball is projected on smooth inclined plane in direction perpendicula...

    Text Solution

    |

  9. A ball is thrown horizontally from a point O with speed 20 m/s as show...

    Text Solution

    |

  10. A person decided to walk on an escalator which is moving at constant r...

    Text Solution

    |

  11. On a frictionless horizontal surface , assumed to be the x-y plane ,...

    Text Solution

    |

  12. A cuboidal elevator cabon is shown in the figure. A ball is thrown fro...

    Text Solution

    |

  13. Two particles are thrown simultaneously from points A and B with veloc...

    Text Solution

    |

  14. A man wishes to cross a river in a boat. If he crosses the river in mi...

    Text Solution

    |

  15. Rain is falling vertically with a speed of 20ms^(-1)., A person is run...

    Text Solution

    |

  16. A glass wind screen whose inclination with the vertical can be changed...

    Text Solution

    |

  17. Boat moves with velocity 5 m/s on still water. It is steered perpendic...

    Text Solution

    |

  18. Velocity of the boat with respect to river is 10 m/s. From point A it ...

    Text Solution

    |

  19. Velocity of the boat with respect to river is 10m/s. From point A it i...

    Text Solution

    |

  20. Drift is distance along a river a boat covers in crossing the river. I...

    Text Solution

    |