Home
Class 12
PHYSICS
Consider a drop of rain water having mas...

Consider a drop of rain water having mass 1 g falling from a height of `1 km`. It hits the ground with a speed of `50 m//s` Take `g` constant with a volume `10 m//s^(2)`. The work done by the
(i) gravitational force and the
(ii) resistive force of air is :

A

`(i)-10J" "(ii) -8.25J`

B

`(i)1.25J" "(ii)-8.25J`

C

`(i)100J" "(ii)8.75J`

D

`(i)10J" "(ii)-8.75J`

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • WORK, ENERGY AND POWER

    AAKASH INSTITUTE|Exercise Assignment (SECTION - D)|15 Videos
  • WORK, ENERGY AND POWER

    AAKASH INSTITUTE|Exercise Assignment (SECTION - B)|39 Videos
  • WAVES

    AAKASH INSTITUTE|Exercise ASSIGNMENT ( SECTION-D ( Assertion - Reason Type Questions ))|12 Videos

Similar Questions

Explore conceptually related problems

A stone of mass 20 g falling from height of 2 km hits the ground with a speed of 200 ms^-1 . The work done by the gravitational force is

It is well known that a rain drop falls under the influence of the downward gravitational force and the opposing resistive force. The latter is known to be proportional to the speed of the drop, but is otherwise undetermined. Consider a drop of mass 1.0g falling from a height of 1.00km. It hits the ground with a speed of 50.0ms^(-1) (a) What is the work done by the gravitational force ? (b) What is the work done by the unknown resistive force ?

A raindrop of mass 2g falling from a height of 1.00 km, hits the ground with a speed of 40.0 ms^(-1). (a) Find the work done by the grativational force. (b) Find the work done by t he opposing resistive force (g=10ms^(-2))

A drop of mass 2.0 g falls from a cliff of height 1.0 km It hits the ground with a speed of 50.0 ms^(-1). The work done by the resistive force is

A drop of mass 1.00 g falling from a height 1.00 km . It hits the ground with a speed of 50.0 ms^(-1) . What is the work by the unknown resistive force ?

A raindrop of mass 1g falling from a height of 1km hits is the ground with a speed of 50 ms^(-1) . Which of the following statements is correct? ("Taking" g= 10ms^(-2)) .

A raindrop of mass 1 g falling from a height of 1 km hits the ground with a speed of 50 m s^(-1) . If the resistive force is proportional to the speed of the drop, then the work done by the resistive force is (Take g = 10 m s^(-2) )

AAKASH INSTITUTE-WORK, ENERGY AND POWER-Assignment (SECTION - C)
  1. Consider a drop of rain water having mass 1 g falling from a height of...

    Text Solution

    |

  2. A spring of force constant k is cut into lengths of ratio 1 : 2 : 3. T...

    Text Solution

    |

  3. Two block A and B of masses 3m and m respectively are connected by a m...

    Text Solution

    |

  4. A particle moves from a point (-2hati+5hatj) to (4hatj+3hatk) when a f...

    Text Solution

    |

  5. A bullet of mass 10 g moving horizontally with a velocity of 400ms^(-1...

    Text Solution

    |

  6. Two identiacal balls A and B having velocities of 0.5 m/s and 0.3" m...

    Text Solution

    |

  7. What is the minimum velocity with which a body of mass m must enter a ...

    Text Solution

    |

  8. A body of mass 1 kg begins to move under the action of a time dependen...

    Text Solution

    |

  9. If Vectors vec(A)= cos omega hat(i)+ sin omega hat(j) and vec(B)=(cos)...

    Text Solution

    |

  10. A ball is thrown vertically downwards from a height of 20m with an int...

    Text Solution

    |

  11. On a friction surface a block a mass M moving at speed v collides elas...

    Text Solution

    |

  12. The heart of a man pumps 5 liters of blood through the arteries per mi...

    Text Solution

    |

  13. Two particles of masses m(1),m(2) move with initial velocities u(1) an...

    Text Solution

    |

  14. Two similar springs P and Q have spring constant K(P) and K(Q) such th...

    Text Solution

    |

  15. A partical of mass m is driven by a machine that deleveres a constant ...

    Text Solution

    |

  16. A block of mass 10 kg, moving in x-direction with a constant speed of ...

    Text Solution

    |

  17. A body of mass (4m) is laying in xy-plane at rest. It suddenly explode...

    Text Solution

    |

  18. A uniform force of (3 hati + hatj) newton acts on a partical of mass 2...

    Text Solution

    |

  19. The potential energy of a particle in a force field is: U = (A)/(r^(...

    Text Solution

    |

  20. Two sphere A and B of masses m(1) and m(2) respectivelly colides. A is...

    Text Solution

    |