A marble slides without friction in a vertical plane around the inside of a smooth, 26 cm-diameter horizontal pipe. The marble's speed at the bottom is 3.5m/s this is fast enough so that the marble makes a complete loop, never losing contact with the pipe.
What is its speed at the top? in m/s
What is its speed at the top? in m/s
-
v² = V² - 2*g*d → v = √[3.5² - 2*9.8*.26]
v = 2.67 m/s
v = 2.67 m/s