The one factor that affects GPE that we cannot explore using this simulator is the amount of gravity. As we say in our unit on gravity, each object exerts a different amount of gravity based on its mass and how far you are from its center. On earth the effect of this gravity is always constant near the surface of the earth. This is g, the acceleration due to gravity. This is the last factor affecting the GPE an object feels here on earth.

Review multiple-concept example 7 in this chapter as an aid in solving this problem. in a fast-pitch softball game the pitcher is impressive to watch, as she delivers a pitch by rapidly whirling her arm around so that the ball in her hand moves in a circle. in one instance, the radius of the circle is 0.626 m. at one point on this circle, the ball has an angular acceleration of 66.1 rad/s2 and an angular speed of 12.6 rad/s. (a) find the magnitude of the total acceleration (centripetal plus tangential) of the ball. (b) determine the angle of the total acceleration relative to the radial direction.