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 4 of 10.
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".
Paresh said:
1 decade ago
According to principle of energy conservation do not destroy the energy, energy changes one phase to other phase.
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.
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?
Mukesh said:
1 decade ago
Free molecule have different masses & momentum so without acting force.
Satyajit Sahu said:
1 decade ago
Here, there may be variation of air resistance and road evenness for that, it would change its momentum.
Venu$sai said:
1 decade ago
This question states that newton's first law.
Sunil said:
1 decade ago
According to conservation of energy: Energy neither created nor destroyed but it can change one form to another.
Nikita Jadhav said:
1 decade ago
Answer B is wrong because the given question is Newton second law and not the energy conservation law.
Saroj sharma said:
1 decade ago
It is true that energy not created nor destroyed transformation of energy from one form to another possible. So given description is wrong.
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