A particle of mass 
is moving with a uniform speed 
in the 
plane along the line 
. The magnitude of the angular momentum of the particle about the origin is
A
60 units
B
units
C
zero
D
7.5 units
Text Solution
Verified by ExpertsThe correct answer is:
A
: 
has beenshown in the figure. When 
, So 
The slope of the line can be obtained by comparing with the equation of line 
If we draw a line perpendicular to this line.
Length of the perpendicular 
Angular momentum of particle going along this line 
units
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