A body of mass 'm' moving along the circumference of a circle of radius r with uniform speed 'u' and
completes half the revolution. The work done is
Answers
Answered by
3
Since, centripetal acceleration
a
c
=
r
v
2
=rω, because v=rω.
Work done, W=
F
⋅
r
, where
r
is the displacement vector.
As particle is under uniform circular motion,
F
⊥
r
. So, W=
F
⋅
r
=0
Answered by
0
Explanation:
Mass=m
circumference=2πr
it complete half revolution means
it cover πr distance
workdone=mgπr
upper answer is wrong bcz that was workdone due to centripetal force
Similar questions