(10) 1. Select and write the correct answers. (1) A body of mass 'm' performs uniform circular motion along a circular path of radius 'r' velocity ‘v’, If its angular momentum is “L’then the centripetal force actingg on it is L2 (a) m 2 (b) (c) (d) mr
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Answered by
0
Explanation:
If the universal set is U = { 1, 2, 3, 4,5}and A={xlx is a prime factor of 420} then write the set A in the Tabular form
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Answer:
Correct option is B L 2 /mr 3
Explanation:
m= mass of body performing circular motion
L= angular momentum
r= radius of circular path
v= velocity of the particle
The angular momentum ,
L=mvr
v=
mr
L
. . . . . . .(1)
The centripetal force,
f
c
=
r
mv
2
. . . .(2)
Substitute equation (1) in equation (2), we get
f
c
=
r
m
(
mr
L
)
2
f
c
=
mr
3
L
2
The correct option is B.
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