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प्रश्न
State the condition when the change in the momentum of a body depends only on the change in its velocity.
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उत्तर
If the mass of the body m remains constant then the change in momentum of the body depends only on the change in its velocity.
संबंधित प्रश्न
A brass ball is hanging from a stiff cotton thread. Draw a neat labeled diagram showing the forces acting on the brass ball and cotton thread
A force is applied on (i) a non-rigid body and (ii) a rigid body. How does the effect of the force differ in the above two cases?
The S.I. unit of force is kgf. (kilogram-force)
Match the column
| Column A | Column B |
| (a) Camel | (1) broad and deep foundation |
| (b) Truck | (2) broad feet |
| (c) Knife | (3) six or eight tyres |
| (d) High building | (4) sharp cutting edge |
| (e) Thrust | (5) atm |
| (f) Moment of force | (6) N |
| (g) Atmospheric pressure | (7) N m |
State the effect of force F in of the following diagram.
State one way to obtain greater moment of a given force about a given axis of rotation.
Classify the following amongst contact and non-contact forces.
normal reaction force,
State two factors on which moment of the force about a point depends.
Calculate the minimum distance between point of application of force and axis of rotation of a rigid body, if a force 125 N produces a moment of force of 25.75 Nm.
