- #1
A Dhingra
- 211
- 1
Hi there.
I was just wondering how does a force actually casue motion of body .. and what are the factors that determine whether the force will cause change in bodies state of motion or direction or its shape?
This is what i was thinking about the action of force:
A solid body has matter in the form of atoms consisting of charges. In equilibrium state when there is no external force acting on the system, the system has balanced forces. In the bulk of the body where the atoms are surrounded by similar atoms everywhere the forces of repulsion between the electrons and that between electron and protons is balanced, i.e. the atom experiences no net force and hence tends to remain in its state of rest (so assumed). But the atoms at the surface of the body are not surrounded by similar atoms; hence they have net unbalanced force, which should mean that the atoms on surface should move.(Well, here i took it for granted that unbalanced force causes a body to move, assuming this is true for one particle body like electron). But may be because they are bound to the atoms inside, they tend to remain stressed but at their own place.
Hence when an external force (as in a body coming closer to this body and electrostatic interactions coming into play) acts on the body the atoms use their unbalanced force and the extra energy to overcome the repulsion from this body. And when the external force becomes greater than that extra force of the surface, the atoms around the force applying body get repelled, disturbing their neighbour in the bulk and the wave of disturbance travels through the medium till the last layer of the atoms. When the effect reaches the last layer of atoms, the magnitude of force acting on individual atom must have decreased such that the force cannot make the last layer move beyond a certain extent. This way the body drifts by a small amount (this has been assumed that the friction exists otherwise also it can be thought of) and executes motion. And the wave travels to and fro again and again ensuring that the motion continues…..
Is this in any form a sensible description of how force causes motion?
Please help me grasp the idea of force and its action on multi-particle body...
I was just wondering how does a force actually casue motion of body .. and what are the factors that determine whether the force will cause change in bodies state of motion or direction or its shape?
This is what i was thinking about the action of force:
A solid body has matter in the form of atoms consisting of charges. In equilibrium state when there is no external force acting on the system, the system has balanced forces. In the bulk of the body where the atoms are surrounded by similar atoms everywhere the forces of repulsion between the electrons and that between electron and protons is balanced, i.e. the atom experiences no net force and hence tends to remain in its state of rest (so assumed). But the atoms at the surface of the body are not surrounded by similar atoms; hence they have net unbalanced force, which should mean that the atoms on surface should move.(Well, here i took it for granted that unbalanced force causes a body to move, assuming this is true for one particle body like electron). But may be because they are bound to the atoms inside, they tend to remain stressed but at their own place.
Hence when an external force (as in a body coming closer to this body and electrostatic interactions coming into play) acts on the body the atoms use their unbalanced force and the extra energy to overcome the repulsion from this body. And when the external force becomes greater than that extra force of the surface, the atoms around the force applying body get repelled, disturbing their neighbour in the bulk and the wave of disturbance travels through the medium till the last layer of the atoms. When the effect reaches the last layer of atoms, the magnitude of force acting on individual atom must have decreased such that the force cannot make the last layer move beyond a certain extent. This way the body drifts by a small amount (this has been assumed that the friction exists otherwise also it can be thought of) and executes motion. And the wave travels to and fro again and again ensuring that the motion continues…..
Is this in any form a sensible description of how force causes motion?
Please help me grasp the idea of force and its action on multi-particle body...