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.
A.TrueB.False
Answers
Answered by
13
momentum of system of body is constant when any external force applied on that systems is equation to zero .
because we know ,
change in momentum per unit time is called force
e.g.
dP/dt=Fext
if Fext =0
then ,
dP/dt =0
it means
Pf-Pi = constant
but external force is constant then
dp/dt =K {Fext =constant =K
dp=Kdt
Pf-pi =Kt
we see
change in momentum is variable.
so, we can say that above statement is false because force is constant hence momentum is variable.
because we know ,
change in momentum per unit time is called force
e.g.
dP/dt=Fext
if Fext =0
then ,
dP/dt =0
it means
Pf-Pi = constant
but external force is constant then
dp/dt =K {Fext =constant =K
dp=Kdt
Pf-pi =Kt
we see
change in momentum is variable.
so, we can say that above statement is false because force is constant hence momentum is variable.
Answered by
3
The given statement above is true
praven:
nope the right answer us false
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