Mechanical Engineering - Engineering Mechanics - Discussion
Discussion Forum : Engineering Mechanics - Section 1 (Q.No. 1)
1.
According to principle of conservation of energy, the total momentum of a system of masses in any direction remains constant unless acted upon by an external force in that direction.
Discussion:
97 comments Page 7 of 10.
Anil Shukla said:
1 decade ago
Law of conservation of energy: Energy is neither created nor destroy but its can be change one form to another form.
Law of linear momentum: The total momentum of a system of masses in any direction remains constant unless acted upon by an external force in that direction.
BOTH LAWS OPPOSE EACH OTHER?
Law of linear momentum: The total momentum of a system of masses in any direction remains constant unless acted upon by an external force in that direction.
BOTH LAWS OPPOSE EACH OTHER?
Md Mahfooz said:
1 decade ago
Law of conservation of energy: Energy is neither created nor destroy but its can be change one form to another form.
Paresh said:
1 decade ago
According to principle of energy conservation do not destroy the energy, energy changes one phase to other phase.
MD AFTAB ALAM said:
1 decade ago
According to principle of conservation of energy "energy cannot be created nor be destroyed but it can be transformed from one form to another". The given statement follows the Newton's 2nd law of motion which states "Rate of change of momentum(m x a) is directly proportional to the force(F) which applied in that direction".
Karakala jalandar reddy said:
1 decade ago
Law of conservation of energy system neither be created nor be destroyed.
Chandan said:
1 decade ago
The statement is actually true. But It explains "Law of conservation of Momentum" not the Energy.
Swapnil said:
1 decade ago
Newtons 2 law and law of conservation of energy combined. So it is false statement.
Venu$sai said:
1 decade ago
This question states that newton's first law.
Vivek said:
1 decade ago
Its not law of conversation of energy. It is a part off statement from newton's law.
Anant gyan punj said:
1 decade ago
The reason is that total momentum includes linear and angular momentum, since linear momentum is conserved in that direction if external force is not acting in that direction. But angular momentum may or may not be conserved as that force may create torque. Hence total momentum will not be conserve.
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