Home
Class 11
PHYSICS
A man swimming in a river from a point. ...

A man swimming in a river from a point. A on one bank has to reach a point C on other bank, which is at a distance `l` from the point B, directly opposite to A on other bank. River width is `d` and the current velocity is `u_(0)`. Find the minimum speed of swimmer relative to still water with which he should swim.

Text Solution

Verified by Experts

The correct Answer is:
`[(u_(0)d)/(sqrt(l^(2) + d^(2))]`
Promotional Banner

Topper's Solved these Questions

  • KINEMATICS

    PHYSICS GALAXY - ASHISH ARORA|Exercise Discussion Question|18 Videos

  • KINEMATICS

    PHYSICS GALAXY - ASHISH ARORA|Exercise Conceptual MCQs Single Option Correct|35 Videos

  • KINEMATICS

    PHYSICS GALAXY - ASHISH ARORA|Exercise Unsolved Numerical Pro.|83 Videos

  • GRAVITATION

    PHYSICS GALAXY - ASHISH ARORA|Exercise Unsolved Numerical|94 Videos

  • LINEAR MOMENTUM & ITS CONSERVATION

    PHYSICS GALAXY - ASHISH ARORA|Exercise exercise 1.3|3 Videos

Similar Questions

Explore conceptually related problems

In the previous problem, How far from the point directly opposite to the starting point does the man reach the opposite bank

Water is flowing in a river of width 36m with a speed of 2ms^(-1) .A person in a boat at a point "P" on the bank of the river wants to cross the river by the shortest path to reach a point "Q" directly opposite on the other bank.If he can row his boat with a speed of 4ms^(-1) in still water,he should row his boat at an angle of ?

[" 16.Water is flowing in a river of width "36m" with a speed of "2ms^(-1)" .A person in a boat "],[" at a point "p" on the bank of the river wants to cross the river by the shortest path to "],[" reach a point "Q" directly opposite on the other bank.If he can row his boat with a "],[" speed of "4ms^(-1)" in still water,he should row his boat at an angle of (multiples of "],[10^(@)" ) "]

A man can swim with a speed v relative to water . There is a river of width d which is flowing at a speed u . A is the point on river bank from where he starts and B is point directly opposite to A on the other side of the river .

A man wants to reach point B on the opposite bank of a river flowing at a speed as shown in figure. What minimum speed relative to water should the man have so that he can reach point B? In which direction should he swim?

A man is boat intends to cross river from A. If he rows perpendicular to the banks then he takes t_1 = 10 minutes to reach the other bank and he reaches point C at a distance l = 120 m down the stream from the point B which is exactly opposite to A on the other bank. If he heads at a certain angle alpha to the straight path AB against the current he will reach point B in t_2 = 12.5 minutes. The width of river is-

Two swimmers start at the same time from point A one bank of a river to reach point B on the other bank, lying directly oppostie to point A. one of them crosses the river along the straight line AB, while the other swims at right angles to the stream and then walks the distance, which he has been carried awayby the stream to get to point B. Both swimmers reach point B at the same time. what was the velocity (assumed uniform) of his walking if velocity of both the swimmers in still water is 2.5 km h^(-1) and the stream velocity is 2 km h^(-1) ?

A river is flowing at a speed of 5 km/h in a particular direction. A man, who can swim at a speed of 20 km/h in still water, starts swimming along the direction of flow of the river from point A and reaches another point B which is at a distance of 30 km from the starting point A. On reaching point B, the man turns back and starts swimming against the direction of flow of the river and stops after reaching point A. The total time taken by the man to complete his journey is

PHYSICS GALAXY - ASHISH ARORA-KINEMATICS-Practice Exercise
  1. An aeroplane has to go from a point A to another point B, 500 km away ...

    Text Solution

    |

  2. Find the time an aeroplane having velocity v takes to fly around a squ...

    Text Solution

    |

  3. A man swimming in a river from a point. A on one bank has to reach a p...

    Text Solution

    |

  4. The coordinates of a bird flying in the xy-plane are x = 2 - alpha t a...

    Text Solution

    |

  5. On a smooth horizontal platform a mass of 2 kg is dragged with a horiz...

    Text Solution

    |

  6. A ball is thrown straight up in air with an initial velocity u. Air ex...

    Text Solution

    |

  7. A boy releases a toy plane from the top of a high hill of height H. Hi...

    Text Solution

    |

  8. The position vector of a particle P with respect to a stationary point...

    Text Solution

    |

  9. The motion of a particle restricted to move in a two dimensional plane...

    Text Solution

    |

  10. A stone is thrown from the top of a tower of height 50 m with a veloci...

    Text Solution

    |

  11. A stone is thrown up from the top of a tower 20,m with a velocity of 2...

    Text Solution

    |

  12. Two bodies are thrown at the same time and in opposite directions and ...

    Text Solution

    |

  13. A ball rolls off top of a staircase with a horizontal velocity u m s^-...

    Text Solution

    |

  14. A boat is moving directly away from a gun on the shore with speed v(1)...

    Text Solution

    |

  15. Two bodies were thrown simultaneously from the same point, one, straig...

    Text Solution

    |

  16. Two particles are projected from a point at the same instant with velo...

    Text Solution

    |

  17. A ball is thrown from a point in level with velocity u and at a horizo...

    Text Solution

    |

  18. In a "RamLeela"stage show an unhappy guy from audience throws an rotte...

    Text Solution

    |

  19. A machine gun is mounted on the top of a tower of height h=100 m. At w...

    Text Solution

    |

  20. A partacle is thrown in horizontal direction with speed u from a point...

    Text Solution

    |