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Q)A block of mass 100 g is moved with a speed of 5 m/s at the highest point in a closed circular tube of radius 10 cm in a vertical plane. The cross- section of the tube is such that the block just fits in it. The block makes several oscillations inside the tube and finally stops at the lowest point. Find the work done by the tube on the block during the process.

varsha jayant karandikar , 15 Years ago
Grade 12
anser 3 Answers
SOURAV CHAKRABARTY

Last Activity: 15 Years ago

.2 j

anandpal shekhawat

Last Activity: 15 Years ago

hi, Ei = 1/2mv^2 + mg2r = 1.45J Ef = 0 so, work done = 0-1.45 = -1.45J

Aditya Kumar

Last Activity: 6 Years ago

Apply wet we get
0.5m(0^2-5^2)=w by tube +w by gravity
                         =.                  +Mg×2r
And on solving
We get 
W by tube =-1.45

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