- #1
Adesh
- 735
- 191
We have a rod ##AB## of mass ##m##, a force (perpendicular to AB) is applied at ##A##.
I want to know how much force will ##B## going to feel? When ##F_1## is applied at ##A## rod will rotate about its COM (which lies at the Center) and hence the point ##B## will also move (a little downwards and left). Since, it has moved there must have been some force which would have caused it, what’s that force? (I must mention here that ##F_1## acted only for a very short time, it was momentary, it caused the rotation and went away).
Well, I tried some thoughts. If ##B## were also to act with a force ##F_2## equal in magnitude to ##F_1## like this
Then also, our system will undergo under same rotation (but under a double torque as before) but this time we know for certain that ##B## was acted by a force ##F_2##.
What was the force that caused the ##B## to move in our first case?
I want to know how much force will ##B## going to feel? When ##F_1## is applied at ##A## rod will rotate about its COM (which lies at the Center) and hence the point ##B## will also move (a little downwards and left). Since, it has moved there must have been some force which would have caused it, what’s that force? (I must mention here that ##F_1## acted only for a very short time, it was momentary, it caused the rotation and went away).
Well, I tried some thoughts. If ##B## were also to act with a force ##F_2## equal in magnitude to ##F_1## like this
Then also, our system will undergo under same rotation (but under a double torque as before) but this time we know for certain that ##B## was acted by a force ##F_2##.
What was the force that caused the ##B## to move in our first case?