Home
Class 11
PHYSICS
A stunt pilot in an airplane diving vert...

A stunt pilot in an airplane diving vertically downward at a speed of 220 kph turns vertically upward by following an approximately semicircular path with a radius of 180 m.
(a) How many g's does the pilot experience due to his motion alone ?
(b) By what factor does the pilot's weight appear to increase at the bottom of the dive ?

Text Solution

Verified by Experts

The correct Answer is:
[(a) 2g (b) 3 times]
Promotional Banner

Topper's Solved these Questions

  • WORK, ENERGY AND POWER

    PHYSICS GALAXY - ASHISH ARORA|Exercise Discussion Question|31 Videos

  • WORK, ENERGY AND POWER

    PHYSICS GALAXY - ASHISH ARORA|Exercise MCQ|158 Videos

  • WORK, ENERGY AND POWER

    PHYSICS GALAXY - ASHISH ARORA|Exercise unsolved|1 Videos

  • RIGID BODIES AND ROTATIONAL MOTION

    PHYSICS GALAXY - ASHISH ARORA|Exercise Unsolved Numerical|63 Videos

Similar Questions

Explore conceptually related problems

An aeroplane flying in the sky dives with a speed of 360 km//h in a verticale circle of radius 200 m The weight of pilot sitting in it is 75 kg Calulate the force with which the pilot presses his seat when the aeroplane is (i) at the lowest position and (ii) at the highest position Take g = 10 m//s^(-2) .

A defense air force plane, diving with constant speed at an angle of 52.0^(@) with the vertical, drops a shell at an altitude of 720 m. The shell reaches the ground 6.00 s after its release. (a) What is the speed of the plane? (b) How far does the shell travel horizontally during its flight? What are the ( c) horizontal and (d) vertical components of its velocity just before reaching the ground? Assume an x axis in the direction of the horizontal motion and an upward y axis.

A fighter aeroplane flying in the sky dives with a speed of 360 km//h in a vertical circle of radius 200 m .Weight of the pilot sitting in it is 75 kg . What will be the value of force with which the pilot presses his seat when the aeroplane is at highest position ? (g=10 m//s^(2))

A fighter plane flying in the sky describes a vertical circle of radius 150 m when looping with a speed of 420 km/h . The weight of the pilot sitting inside it is 90 kg . With what force the pilot presses his seat when the plane is at the (i) highest position of circle (ii) lowest position of circle

A player throws a ball upwards with an initail speed of 129.4 ms^(-1) (a) What is the direction of acceleration during the upward motion of the ball ? (b) What are the velocity and accleration of the ball at the ighest point os its motion. ( c) Choose the =x 0 aand t= 0 be the loction and time at its highest point, vertically downward direction to be the positve direction of X-axis and give the signe of position, velocity and accelration of the ball during its upward, and downward motion. (d) To what hight does the ball rise and after how long does the ball returns to the plausr s hands. (Take g= 9.8 ms^(-23) and begleact air resistance)

A player throwsa a ball upwards with an initial speed of 29.4 ms^(-1) . (i) What is the direction of acceleration during the upwared motion of the ball? (ii) What are the velocity and acceleration of the ball at the highest point of its motion? (iii) Choose the x=0 and t=0 to be the location and time of the ball at its highest point, vertically downward direction to be the positive direction of X-axis, and give the signs of positive, velocity and acceleration of the ball during its upward, and downward motion. (iv) To what height does the ball rise and after how long does the ball return to the player's hand?( Take g =9.8 ms^(-2) , and neglect air resistance).

Fig. shows a metal rod PQ resting on the rails A, B and positoned between the poles of a permanent magnet. The rails, the rod and the magnetic field are in three mutually perperdicular directions. A galvanometer connects the rails through a switch K. Length of the rod = 15 cm, B = 0.50 T, resistance of closed loop containing the rod = 9.0 m Omega Answer the following questions. (a) Suppose K is open and the rod moves with a speed of 12 cm//s in the direction shown, Give the polarity and magnitude of induced e.m.f (b) Is there on excess charge built up at the ends of rods when K is open ? What if K is closed ? (c ) With K open and the rod moving uniformly, there is no net force on the electron in the rod PQ even though they do experience magnetic froce due to the motion of the rod Explain. (d) What is the retarding force on the rod when K is closed? (e) How much powe s required (by an external agent) to keep the rod moving at the same speed ( = 12 cm//s) when K is closed. (f) How much power is dissipated as heat in the closed circuit ? What is the source of this power? (g) What is the induced e.m.f. in the following in the moving rod when the permanent magnet is rotated to a vertical position so that the field is parallel to the rails instead of being perpendicular ?

A pilote of mass m can withstand a maximum apparent weight 6 times of mg . The minimum radius curvature of vertical circle in which the aeroplane dives up from lowest point with a speed 504 kmph is

A sphere a disk and a hoop made of homogeneous materials have the same radius (10 cm) and mass (3kg) They are released from rest at the top of a 30^(@) incline and roll down without slipping through a vertical distance of 2m. (g=9.8m//s^(2)) (a). What are their speeds at the bottom? (b). findt the friction force f each case (c). if they start together at t=0 , at what time does each reach the bottom?

PHYSICS GALAXY - ASHISH ARORA-WORK, ENERGY AND POWER-Practice Exercise
  1. A smooth circular tube is held in a vertical position. A small ball wh...

    Text Solution

    |

  2. A particle is suspended from a fixed point by a string of length 5m. I...

    Text Solution

    |

  3. A stunt pilot in an airplane diving vertically downward at a speed of ...

    Text Solution

    |

  4. A particle of mass m initially at rest starts moving from point A on t...

    Text Solution

    |

  5. A space station 960 m in diameter rotates fast enough that the artific...

    Text Solution

    |

  6. Calculate the angle of banking required for a curve of 200 m radius so...

    Text Solution

    |

  7. A liquid is kept in a cylindrical vessel which is rotated along its ax...

    Text Solution

    |

  8. A sleeve A can slide freely along a smooth rod bent in the shape of a ...

    Text Solution

    |

  9. A hemispherical bowl of radius R=0.1m is rotating about its own axis (...

    Text Solution

    |

  10. A smooth light horizontal rod AB can rotate about a vertical axis pass...

    Text Solution

    |

  11. An ideal massless spring S can compressed 1.0 m in equilibrium by a fo...

    Text Solution

    |

  12. A particle of mass 0.5kg travels in a straight line with velocity v=ax...

    Text Solution

    |

  13. A block of mass m attached with a massless spring of force constant k ...

    Text Solution

    |

  14. The potential energy function for the force between two atoms in a dia...

    Text Solution

    |

  15. A bob tied to the end of a string of length 2m, other end of which is ...

    Text Solution

    |

  16. In a spring gum having spring constant 100 N//m a small ball of mass 0...

    Text Solution

    |

  17. A chain AB of length equal to the quarter of a circle of radius R is p...

    Text Solution

    |

  18. A particle of mass m approaches a region of force starting from r=+inf...

    Text Solution

    |

  19. A particle moving in a straight line is acted by a force, which works ...

    Text Solution

    |

  20. The potential energy function of a particle in a region of space is gi...

    Text Solution

    |