Advertisements
Advertisements
Question
Name and state the action and reaction in the following case:
Hammering a nail.
Solution
Force applied by hammer on nail is action and normal force applied by nail on hammer is reaction to this force.
APPEARS IN
RELATED QUESTIONS
What happens to the force between two objects, if the distance between the objects is doubled and tripled?
The gravitational intensity at the centre of a hemispherical shell of uniform mass density has the direction indicated by the arrow (see Fig 8.12) (i) a, (ii) b, (iii) c, (iv) 0.
State Kepler’s law which is represented by the relation r3 ∝ T2.
A person brings a mass of 1 kg from infinity to a point A. Initially the mass was at rest but it moves at a speed of 2 m s −1 as it reaches A. The work done by the person on the mass is −3 J. The potential at A is
State whether the gravitational force between two masses is attractive or repulsive ?
A ball is thrown up with a speed of 4.9 ms-1.
Calculate the time it takes to reach this height.
To project the rockets which of the following principle(s) is /(are) required?
Three uniform spheres, each having mass m and radius r, are kept in such a way that each touches the other two. The magnitude of the gravitational force on any sphere due to the other two is
Write the answer of the question with reference to laws of gravitation.
Write the value of the universal gravitational constant.
Answer the following questions in reference to the figure below:
- Which relation is shown in the figure?
- What will happen if the mass of one of the objects is doubled?
