Questions
A particle moves on a straight line with a uniform velocity. The incorrect statement about its angular momentum
a
is always zero
b
is zero about a point on the straight line
c
is not zero about a point away from the straight line
d
about any given point remains constant.
detailed solution
Correct option is A
Angular momentum of the particle about point A, L = mv x r. If A lies on the line of motion r = 0 then only L = 0. so option (1) is wrong.Talk to our academic expert!
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A particle moving in a circular path has an angular momentum of L. If the frequency of rotation is halved, then its angular momentum becomes [Kerala CEE 2013]
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