Home
Class 10
PHYSICS
A stone of mass 2 kg is falling from a c...

A stone of mass 2 kg is falling from a certain height. Find the force of attraction between the Earth and the stone. Also, find the acceleration.

Text Solution

Verified by Experts

The correct Answer is:
`19.6N,9.8m//s^(2)`

NA
Promotional Banner

Topper's Solved these Questions

  • GRAVITATION

    CHETAN PUBLICATION|Exercise DEFINE/WRITE THE LAWS:|12 Videos
  • GRAVITATION

    CHETAN PUBLICATION|Exercise ANSWER THE FOLLOWING IS ONE OR TWO SENCTENCES:|7 Videos
  • GRAVITATION

    CHETAN PUBLICATION|Exercise SOLEVE THE FOLLOWING|6 Videos
  • DISASTER MANAGEMENT

    CHETAN PUBLICATION|Exercise ASSIGMENT-10|11 Videos
  • HEAT

    CHETAN PUBLICATION|Exercise ASSIGNMENT - 5 (Answer the following: (Any 1))|3 Videos

Similar Questions

Explore conceptually related problems

Find the force of attraction between the plates of a parallel plate capacitor.

Two spherical balls of mass 10 hg are placed 10 cm apart. Find gravitational force of attraction between them

Find the gravitational force between man of mass 60 kg and the Earth.

A stone of 1 kg is thrown with a velocity of 20 m s-1 across the frozen surface of a lake and comes to rest after travelling a distance of 50 m. What is the force of friction between the stone and the ice?

Take a small stone. Hold it in your hand. We know that the force gravity due to the earth acts on each and every object. When we were holding the stone in our hand, the stone was experiencing this force, but it was balanced by a force that we were applying on it in the opposite direction. As a result, the stone remained at rest. Once we release the stone from our hands the only force that acts on it is the gravitational force of the earth and the stone falls down under its influence. Whenever an object moves under the influence of the force of gravity alone, it is said to be falling freely. Thus the released stone is in a free fall. In free fall, the initial velocity of the object is zero and goes on increasing due to acceleration due to gravity of the earth. During free fall, the frictional force due to air opposes the motion of the object and a buoyant force also acts on the object. Thus, true free fall is possible only in vacuum. For a freely falling object, the velocity on reaching the earth and the time taken for it can be calculated by using Newton's equations of motion. For free fall the initial velocity u=0 and the acceleration a=g . Thus, we can write the equations as v="gt",s=1/2"gt"^(2),v^(2)=2gs For calculating the motion of an object thrown upwards, acceleration is negative, i.e. in a direction opposite to the velocity and is taken to be -g. The magnitude of g is the same but the velocity of the object decreases due to -ve acceleration. The moon and the artificial satellites are moving only under the influence of the gravitational field of the earth. Thus they are in free fall. Which force acts on the stone in free fall after you release it?

Take a small stone. Hold it in your hand. We know that the force gravity due to the earth acts on each and every object. When we were holding the stone in our hand, the stone was experiencing this force, but it was balanced by a force that we were applying on it in the opposite direction. As a result, the stone remained at rest. Once we release the stone from our hands the only force that acts on it is the gravitational force of the earth and the stone falls down under its influence. Whenever an object moves under the influence of the force of gravity alone, it is said to be falling freely. Thus the released stone is in a free fall. In free fall, the initial velocity of the object is zero and goes on increasing due to acceleration due to gravity of the earth. During free fall, the frictional force due to air opposes the motion of the object and buoyant force also acts on the object. Thus, true free fall is possible only in vacuum. For a freely falling object, the velocity on reaching the earth and the time taken for it can be calculated by using Newton's equations of motion. For free fall the initial velocity u=0 and the acceleration a=g . Thus, we can write the equations as v="gt",s=1/2"gt"^(2),v^(2)=2gs For calculating the motion of an object thrown upwards, acceleration is negative, i.e. in a direction opposite to the velocity and is taken to be -g. The magnitude of g is the same but the velocity of the object decreases due to -ve acceleration. The moon and the artificial satellites are moving only under the influence of the gravitational field of the earth. Thus they are in free fall. What is the initial velocity and what is the effect of gravitational acceleration on the object in free fall?

A body of mass 2.5 kg is subjected to the forces shown in figure. Find the acceleration of the centre of maas.

A stone is falling from a mountain. The velocity of the stone is given by V = 9.8t. Draw its graph and find the velocity of the stone ‘4’ seconds after start.

An apple falls from a tree. An insect in the apple finds that the earth is falling towards it with an acceleration 'g'. Who exerts the force needed to accelerate the earth with this acceleration? (AS_(7))

A ball of mass m is dropped onto a floor from a certain height. The collision is perfectly elastic and the ball rebounds to the same height and again falls. Find the average force exerted by the ball on the floor during a long time interval.

CHETAN PUBLICATION-GRAVITATION-NUMERICALS FOR PRACTICE
  1. Find the weight of a man whose mass is 50 kg.

    Text Solution

    |

  2. Find the gravitational force between man of mass 60 kg and the Earth.

    Text Solution

    |

  3. A stone of mass 2 kg is falling from a certain height. Find the force ...

    Text Solution

    |

  4. The planet in space has mass twice as that of the Earth and a radius t...

    Text Solution

    |

  5. Calculate the value of g on the Moon, it its mass is 7.4xx10^(22)kg an...

    Text Solution

    |

  6. If the weight of a body on the surface of the Moon is 100N what is its...

    Text Solution

    |

  7. If the acceleration due to gravity on the surface of the Earth is 9.8m...

    Text Solution

    |

  8. Calculate the escape velocity on the surface of the Moon given the mas...

    Text Solution

    |

  9. Let the period of revolution of a planet at a distance R from a star b...

    Text Solution

    |

  10. The escape velocity for mass is 5.02km/s. If its radius is 3390 km, Wh...

    Text Solution

    |

  11. A planet orbits the Sun in time T at a distance of R from it. Another ...

    Text Solution

    |

  12. An object takes 5s to reach the ground from a height of 5m on a planet...

    Text Solution

    |

  13. A ball falls off a table and reaches the ground in 1s. Assuming g=10m/...

    Text Solution

    |

  14. An iron ball of mass of 3 kg is released from height of 125 m and fall...

    Text Solution

    |

  15. A tennis ball is thrown up and reaches a height of 4.05 m before comin...

    Text Solution

    |

  16. An object thrown vertically upwards reaches a height of 500m. What wa...

    Text Solution

    |

  17. Find a formula for maximum height attained by object.

    Text Solution

    |

  18. A stone thrown vertically upwards with initial velocity u reaches a he...

    Text Solution

    |

  19. A ball thrown up vertically returns to the person after 6s. Find the v...

    Text Solution

    |

  20. A boy drops a coin from the top of a building which is 49 m high. Find...

    Text Solution

    |