Looping II

Classical Mechanics Level pending

A sphere with mass $m$ is abandoned (initial velocity is 0) from point $A$ , sliding along $ABCDEF$ .

$BCDE$ is a circle with radius $R$ .

The acceleration of gravity is equal to $g$ .

The intensity of the force that the ball exerts on the surface at point $D$ is $mg$ .

Calculate the absolute value of the angular velocity of the ball at point $D$ .

Ignore friction.

\sqrt { \frac { 6R }{ g } }

\sqrt { \frac { 2R }{ g } }

\sqrt { \frac { 6g }{ R } }

\sqrt { \frac { 2g }{ R } }

1 solution

Joao Miguel Coelho
May 10, 2016