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Grade: 12
        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.
10 years ago

Answers : (3)

SOURAV CHAKRABARTY
16 Points
							

.2 j

10 years ago
anandpal shekhawat
8 Points
							hi, 
Ei = 1/2mv^2 + mg2r = 1.45J
Ef = 0
so,  work done = 0-1.45 = -1.45J
						
10 years ago
Aditya Kumar
13 Points
							
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
one year ago
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Course Features

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  • Test paper with Video Solution
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  • Study Planner
  • NCERT Solutions
  • Discussion Forum
  • Previous Year Exam Questions


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