Let r be the distance between the cylinder and the center of the turntable. now assume that the cylinder is moved to a new location r/2 from the center of the turntable. which of the following statements accurately describe the motion of the cylinder at the new location?
check all that apply.
a. the speed of the cylinder has decreased.
b. the speed of the cylinder has increased.
c. the magnitude of the acceleration of the cylinder has decreased.
d. the magnitude of the acceleration of the cylinder has increased.
e. the speed and acceleration of the cylinder have not changed.

What is work? how much work is done to move an object 0 meters?

Part f - example: finding two forces (part i) two dimensional dynamics often involves solving for two unknown quantities in two separate equations describing the total force. the block in (figure 1) has a mass m=10kg and is being pulled by a force f on a table with coefficient of static friction îľs=0.3. four forces act on it: the applied force f (directed î¸=30â above the horizontal). the force of gravity fg=mg (directly down, where g=9.8m/s2). the normal force n (directly up). the force of static friction fs (directly left, opposing any potential motion). if we want to find the size of the force necessary to just barely overcome static friction (in which case fs=îľsn), we use the condition that the sum of the forces in both directions must be 0. using some basic trigonometry, we can write this condition out for the forces in both the horizontal and vertical directions, respectively, as: fcosî¸â’îľsn=0 fsinî¸+nâ’mg=0 in order to find the magnitude of force f, we have to solve a system of two equations with both f and the normal force n unknown. use the methods we have learned to find an expression for f in terms of m, g, î¸, and îľs (no n).

What will a positive and a negative charge do if they are separated from each other?