मराठी
महाराष्ट्र राज्य शिक्षण मंडळएस.एस.सी (इंग्रजी माध्यम) इयत्ता १० वी

Write scientific reason. When we drop a feather and a stone at the same time from a height the stone reach the earth faster than a feather. - Science and Technology 1

Advertisements
Advertisements

प्रश्न

Write scientific reason.

When we drop a feather and a stone at the same time from a height the stone reach the earth faster than a feather.

स्पष्ट करा
टीपा लिहा
Advertisements

उत्तर

  1. When we drop a feather and a heavy stone at the same time from a height, the feather experiences a buoyant force and a frictional force due to air and therefore floats and reaches the ground slowly.
  2. But, the buoyant and frictional forces on the stone are much less than the weight of the stone and does not affect the speed of the stone much.
  3. Hence, when we drop a feather and a stone at the same time from a height, the stone reach the earth faster than a feather.
shaalaa.com
  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 1: Gravitation - Write scientific reasons

संबंधित प्रश्‍न

What do you mean by acceleration due to gravity?


Gravitational force acts on all objects in proportion to their masses. Why then, a heavy object does not fall faster than a light object?


A stone is released from the top of a tower of height 19.6 m. Calculate its final velocity just before touching the ground.


A stone is thrown vertically upward with an initial velocity of 40 m/s. Taking g = 10 m/s2, find the maximum height reached by the stone. What is the net displacement and the total distance covered by the stone?


Which force is responsible for the moon revolving round the earth ?


Explain what is meant by the equation :
`g= Gxxm/r^2`
where the symbols have their usual meanings.


During a free fall, will heavier objects accelerate more than lighter ones ?


Explain why, if a stone held in our hand is released, it falls towards the earth.


What is the usual value of the acceleration due to gravity of earth ?


The values of g at six distances A, B, C, D, E and F from the surface of the earth are found to be 3.08 m/s2, 9.23 m/s2, 0.57 m/s2, 7.34 m/s2, 0.30 m/s2 and 1.49 m/s2, respectively.
(a) Arrange these values of g according to the increasing distances from the surface of the earth (keeping the value of g nearest to the surface of the earth first)
(b) If the value of distance F be 10000 km from the surface of the earth, state whether this distance is deep . inside the earth or high up in the sky. Give reason for your answer.


An object thrown vertically upwards reaches a height of 500 m. What was its initial velocity? How long will the object take to come back to the earth? Assume g = 10 m/s


What will be the weight of a person on earth, who weighs 9N on the moon?


For freely falling object we can write the Newton’s second equation of motion as …..


The value of acceleration due to gravity of earth :


A force causes an acceleration of 10 m s-2 in a body of mass 500 g. What acceleration will be caused by the same force in a body of mass 5 kg?


A force acts for 0.1 s on a body of mass 2.0 kg initially at rest. The force is then withdrawn and the body moves with a velocity of 2 m s-1. Find the magnitude of the force. 


How are g and G realated ? 


What do you understand by the free fall?


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×