Download the app

Questions  

A rope of length 30 cm is on a horizontal rough table with maximum length hanging from edge ‘A’ of the table. The coefficient of friction between rope and table is 0.5. The distance of centre  of mass of the rope from ‘A’ is 

Remember concepts with our Masterclasses.

80k Users
60 mins Expert Faculty Ask Questions
a
5153 cm
b
5173 cm
c
7153 cm
d
5193 cm

Ready to Test Your Skills?

Check Your Performance Today with our Free Mock Tests used by Toppers!

detailed solution

Correct option is B

μl−lnmg=mglnμ1−1n=1n0.5n−1n=1nn−1=2;          n=3The total mass is m .The length of the rope hanging is  I3 and the length of the rope on the table is 2I3  whose mass is equal to2m3→rcm2m3−10i^+m3−5j^m=−20i^−5j^3rcm=4009+259=4259=5173

Talk to our academic expert!

+91

Are you a Sri Chaitanya student?

ctaimg

Create Your Own Test
Your Topic, Your Difficulty, Your Pace


Similar Questions

Find the position of centre of mass of a uniform disc of radius R from which a hole of radius r is cut out. The centre of the hole is at a distance R2 from the centre of the disc.


phone icon
whats app icon