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Name and state the action and reaction in the following case:Hammering a nail. - Physics

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प्रश्न

Name and state the action and reaction in the following case:
Hammering a nail.

एक पंक्ति में उत्तर

उत्तर

Force applied by hammer on nail is action and normal force applied by nail on hammer is reaction to this force.

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अध्याय 3: Laws of Motion - Exercise 3 [पृष्ठ १२८]

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फ्रैंक Physics [English] Class 9 ICSE
अध्याय 3 Laws of Motion
Exercise 3 | Q 12.3 | पृष्ठ १२८

संबंधित प्रश्न

A thin spherical shell having uniform density is cut in two parts by a plane and kept separated as shown in the following figure. The point A is the centre of the plane section of the first part and B is the centre of the plane section of the second part. Show that the gravitational field at A due to the first part is equal in magnitude to the gravitational field at B due to the second part.


The gravitational field in a region is given by \[E = \left( 2 \overrightarrow{i} + 3 \overrightarrow{j} \right) N {kg}^{- 1}\] . Show that no work is done by the gravitational field when a particle is moved on the line 3y + 2x = 5.

[Hint : If a line y = mx + c makes angle θ with the X-axis, m = tan θ.]


Multiple Choice Question. Select the correct option.

The mass of earth is 6 × 1024 kg and radius of earth is 6.4 × 106 m. The magnitude of force between the mass of 1 kg and the earth is:


A ball is thrown up with a speed of 4.9 ms-1.
Calculate the maximum height it would gain before it begins to fall.


A force can produce ________, In an object at rest. It can __________ an object and change its __________ of motion.


What do you mean by a gravitational constant?


Solve the following problem.

Find the gravitational force between the Sun and the Earth.
Given Mass of the Sun = 1.99 × 1030 kg
Mass of the Earth = 5.98 × 1024 kg
The average distance between the Earth and the Sun = 1.5 × 1011 m.


Mahendra and Virat are sitting at a distance of 1 m from each other.Their masses are 75 kg and 80 kg respectively. What is the gravitational force between them? (G = 6.67 × 10-11 Nm2/kg2)


Law of gravitation gives the gravitational force between


If the law of gravitation, instead of being inverse-square law, becomes an inverse-cube law- ______.

  1. planets will not have elliptic orbits.
  2. circular orbits of planets is not possible.
  3. projectile motion of a stone thrown by hand on the surface of the earth will be approximately parabolic.
  4. there will be no gravitational force inside a spherical shell of uniform density.

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