ble As the marble moves along the vertical circular loop inside the pipe, the ve

Question

ble As the marble moves along the vertical circular loop inside the pipe, the velocity of the marble. Check all that apply A marble slides without friction in a vertical loop around the inside of a smooth, 26.2 cm diameter horizontal pipe. The marble's speed at the bottom is 4.17 m/s and is fast enough so that the marble never loses contact with the pipe. stays constant. has a maximum and a minimum value. changes direction. is highest at the top and smallest at the bottom. changes magnitude Previous Answers Correct Part B What is the marble's speed at the top? View Available Hint(s) top m/s Submit

Explanation / Answer

Solution:

B) As The friction force is zero, so the only force acting on marble is gravtiational force.

Now, applying the formula , v^2 - u^2 = 2 x g x s

=> v^2 - (4.17)^2 = 2 x (-9,81) x 0.262

=> v^2 = 12.248

=> v = 3.499 m/s

or v = 3.5 m/s (approx)

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