As an object is spun faster in a circle, its acceleration must increase. In order to increase the acceleration, the force acting on the object must increase. The picture below shows the basic setup for the first three parts of this lab. A piece of string is attached to an object (in the picture below, it is a roll of electric tape). The string is then fed through the pipe, and the free end of the string is then attached to the mass hanger. Holding the pipe vertically in your hand, swing the object around in a horizontal circle. Make sure to keep your hand far enough away from your body that you don't hit yourself, and also try to avoid your hand from interfering with the string. Using this setup, carry out an experiment to determine how the force depends on the rotational speed of the object when it is moving in a circle of fixed radius. Use at least 5 different speeds.

1. Force versus rotation speed As an object is spun faster in a circle, its acceleration must increase. In order to increase the acceleration, the force acting on the object must increase. The picture below shows the basic setup for the rst three parts of this lab. A piece of string is attached to an object (in the picture below, it is a roll of electric tape). The string is then fed through the pipe, and the free end of the string is then attached to the mass hanger. Holding the pipe vertically in your hand, swing the object around in a horizontal circle. Make sure to keep your hand far enough away from your body that you don't hit yourself, and also try to avoid your hand from interfering with the string. Using this setup, carry out an experiment to determine how the force depends on the rotational speed of the object when it is moving in a circle of xed radius. Use at least 5 different speeds. II. Force versus mass Using the same setup as in the previous section, carry out an experiment to determine how the force depends on mass for objects moving in circles of xed radius and xed angular speed. 111. Force versus radius Using the same setup as in the previous sections, carry out an experiment to determine how the force depends on the radius for an object of xed mass moving in a circle of xed radius