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All the surface are smooth and the strings ans pulleys are light. The force exerted by the 20 cm part of the rod on the 10 cm part is

A

6 N

B

12 N

C

24 N

D

36 N

Text Solution

Verified by Experts

The correct Answer is:
C

`R-20=(m)/(3)a` (i)
`32-R=(2m)/(3)a` b (iii) Dividing (i) by (ii), we get
`(R-20)/(32-R)=(1)/(2)rArr2R-40=32-R`
R=24N
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