Question

A marble is droped into a friction less U-tube. If the tube is semicircular with mean
radius 5 cm and the mass of the ball is 2 gram, find its velocity at the bottom of tube. Take g= 10 m/s .​

Answer 1

this implies that the height of fall to be 5cm=0.05m as there is zero friction throughout the tube so no opposing force takes place .

therefore velocity =

$\sqrt{2 \times 10 \times 0.05}$

= 1 m/s

Answer 2

Answer:

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