Home
Class 11
PHYSICS
A man stands on a running train (speed 6...

A man stands on a running train (speed 60 kmph) with his feet 60 m apart facing forward. If the train rounds a curve of radius 450 m in a counterclockwise sense, what per cent of his weight rests on his left leg, if his centre of mass is 1.2 m above the floor ?

Text Solution

Verified by Experts

The correct Answer is:
`37.4 %`
Promotional Banner

Topper's Solved these Questions

  • CENTRIPITAL AND CENTRIFUGAL FORCES

    NN GHOSH|Exercise Exercises (A)|18 Videos

  • CALORIMETRY

    NN GHOSH|Exercise All Questions|28 Videos

  • COMPOSITION AND RESOLUTION OF VELOCITIES

    NN GHOSH|Exercise Exercise|25 Videos

Similar Questions

Explore conceptually related problems

A man with his hands in his pocket is standing in a bus , which is taking a turn in a horizontal curve of radius 50 m , with a speed of 7 m/s far from the vertical must he lean to keep his balance ?

A man whose mass is m kg jumps vertically into air from the sitting position in which his centre of mass is at a height h_(1) from the ground. When his feet are just about to leave the ground his centre of mass is at height h_(2) from the ground and finally centre of mass rises to h_(3) above the ground when he is at the top of the jump. what is the average upward force exerted by the ground on him?

A train running at the speed of 60 kmph crosses a 200 m long platform in 27 seconds. What is the length of the train ? 200 m e t r e s b. 240 m e t r e s c. 250 m e t r e s d. 450 m e t r e s e. none of these

As astronaut of mass 60 kg is revolving around the Earth in a satellite. What will be his weight inside the satellite assuming g = 10 m//s^(2) .

A man stands on a rotating platform, with his arms stretched horizontal holding a 5 kg weight in each hand. The angular speed of the platform is 30 revolutions per minute. The man then brings his arms close to his body with the distance of each weight from the axis changing from 90 cm to 20 cm . moment of inertia of the man together with the platform may be taken to be constant and equal t 7.6 kg m^(2) . (a) What is the his new angular speed ? (Neglect friction.) (b) Is kinetic energy conserved in the process ? If not, from where does the change come about ?

a. A rail road flat car of mass M can roll without friction along a straight horizontal track . Initially, a man of mass m is standing on the car which is moving to the right with speed v_(0) . What is the change in velocity of the car if the man runs to the left so that his speed relative to the car is v_(rel) just before he jumps off at the left end? b. If there are n men each of mass m on the car, should they all run and jump off together or should they run and jump one by one in order to give a greater velocity to the car?

A man of mass m is standing on the floor of a lift. Find his apparent weight when the lift at rest or moving with uniform velocity v.

A man is l=9m behind the door of a train when it start moving with acceleration a=2 m/s^2 . The man runs at full speed. How far does he have to run and after what time does he get into the train ? What is his speed ?

NN GHOSH-CENTRIPITAL AND CENTRIFUGAL FORCES-Exercises (B)
  1. In problem 15 if a motor-cyclist passes over the bridge at 18 ms^(-1),...

    Text Solution

    |

  2. Calculate the ratio of the reaction of a convex bridge at the highest ...

    Text Solution

    |

  3. A heavy particle of mass 2kg is tied to two strings, each of length 25...

    Text Solution

    |

  4. A body is suspended by a string of length 1 m and is projected horizon...

    Text Solution

    |

  5. A mass of 0.675 kg on a frictionless table is attached to a string whi...

    Text Solution

    |

  6. A particle is placed inside a hemispherical bowl which rotates about i...

    Text Solution

    |

  7. A rigid rod of length l but of negligible mass has heavy mass m attach...

    Text Solution

    |

  8. Suppose that the string of a simple pendulum is elastic and k is its f...

    Text Solution

    |

  9. A rod of length l rotates with uniform velocity omega about an axis pe...

    Text Solution

    |

  10. A small body is placed on the top of a smooth sphere of radius R. Then...

    Text Solution

    |

  11. A particle mass m begins to slide down a fixed smooth sphere from the ...

    Text Solution

    |

  12. A particle of mass m is suspended by a string of length l from a fixed...

    Text Solution

    |

  13. A man stands on a running train (speed 60 kmph) with his feet 60 m apa...

    Text Solution

    |

  14. A stone is thrown horizontally with a velocity of 10m//sec. Find the r...

    Text Solution

    |

  15. A body is weighed on a spring balance in the wagon of a train travelli...

    Text Solution

    |

  16. Two particles A and B move anticlockwise with the same speed v in a ci...

    Text Solution

    |

  17. A conical pendulum consisting of rigid rod of length l and mass m rota...

    Text Solution

    |

  18. A ring of mass m and radius R is being rotated about its axis with con...

    Text Solution

    |

  19. Water flows along a horizontal pipe with a curve having a radius of R=...

    Text Solution

    |

  20. A rough horizontal plate rotates with a constant angular velocity w ab...

    Text Solution

    |