Someone stuck a piece of chewing gum on the outer edge of a blade on a ceiling fan. The radius (r) of where the gum is from the center of the spinning fan is 0.60m. The period (T) that it takes for the blade to complete one revolution is 0.25seconds on its slowest speed setting. If we estimate the piece of chewed gum to have a mass (m) of 0.0026Kg, then how much centripetal Force (Fc) is on the gum when the fan is spinning at this speed?

Aball is thrown from the top of a building with an initial velocity of 21.9 m/s straight upward, at an initial height of 51.6 m above the ground. the ball just misses the edge of the roof on its way down, as shown in the figure. (a) determine the time needed for the ball to reach its maximum height. (b) determine the maximum height. (c) determine the time needed for the ball to return to the height from which it was thrown, and the velocity of the ball at that instant. (d) determine the time needed for the ball to reach the ground. (e) determine the velocity and position of the ball at t = 5.35 s.