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Newton's law seem to be incomplete.... | |||
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Posted by: rikas ® 02/19/2009, 22:45:01 Author Profile eMail author Edit |
hi all,
we r all aware of newtons third law. but does it satisfy all the practical things. I need a clear understanding of this law. its easy when we take the case of jet propulsion. if i push an object, it moves. so where s the reaction. there im overcoming its inertia. Can anyone explain me it practically.. |
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: Newton's law seem to be incomplete.... | |||
: Newton's law seem to be incomplete.... -- rikas | Post Reply | Top of thread | Engineering Forum |
Posted by: zekeman ® 02/19/2009, 23:58:12 Author Profile eMail author Edit |
You're mixing up two laws. The third law is the most obvious.
If you push something with a force ,F, it pushes back with the SAME force.F=d(mv)/dt is third law, concerning overcomng inertia as you put it.It is the quantification of the first law. |
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: : Newton's law seem to be incomplete.... | |||
: : Newton's law seem to be incomplete.... -- zekeman | Post Reply | Top of thread | Engineering Forum |
Posted by: rikas ® 02/20/2009, 02:17:44 Author Profile eMail author Edit |
thanks for ur interest..F=d(mv)/dt is derived from the second law right? i m clear with that..where does the equal reaction goes.. |
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: Newton's law seem to be incomplete.... -- rikas | Post Reply | Top of thread | Engineering Forum |
Posted by: traingdt ® 02/19/2009, 23:51:24 Author Profile eMail author Edit |
When pushing something, the "reaction" is the pressure you feel on your finger. |
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