- #1
Nugso
Gold Member
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Homework Statement
An object is in uniform circular motion. As the time passes by, its mass decreases. ( It has Co2 in it, and it evaporates) What will happen to the object's velocity and angular momentum?
Homework Equations
F = mV²/r, L = mvr
The Attempt at a Solution
Well, I'm trying to figure out if the centripetal force will change. According to the first formula, it seems like it will. ( As the mass of the object decreases). But I do think that maybe the object will increase in order to balance so that the centripetal force won't change.
The answer is = V increases, L does not change. Even if the V increases, it'll increase to balance the decrease of mass(Actually, V² will increase proportionally to M, so in all cases angular moment mvr, should decrease)
Can anybody help me with this?