Recent content by teenholiday

A massless sping of spring constant k=74 N/m is hanging from the ceiling. A 490g mass is hooked onto the unstretched spring and allowed to drop. Find the amplitude and the period of the resulting motion. Attempt: F= -kx x= A cos (wt) w = sqrt(k/m) t I'm trying to solve for A, but...

^^ thanks for the alternative method. i had tried using the relevant equation, but i must have been tired or something, because i kept on getting the wrong answer. i got it now though. thanks.

Homework Statement An electric ceiling fan is rotating about a fixed axis with an initial angular velocity of 0.290 rev/s. The angular acceleration is 0.888 rev/s^2. Its blades form a circle of diameter 0.740 m. Through how many revolutions has the blade turned in the time interval 0.208 s...

Homework Statement An astronaut is training in an earthbound centrifuge that consists of a small chamber whirled around horizontally at the end of a 4.5 m-long shaft. The astronaut places a notebook on the vertical wall of the chamber and it stays in place. If the coefficient of static...