3. A clock keeps time by use of a simple pendulum. The pendulum has a mass of 0.

Question

3. A clock keeps time by use of a simple pendulum. The pendulum has a mass of 0.5 kg suspended 26 cm below the pivot point, but the clock is running slow. What adjustment could you make to make the clock run at the proper rate?

4. A violin string is stretched between the tuning peg and the bridge. When the string is pulled to the side a distance d (such as when you are about to pluck it) the string opposes the pull with a force of magnitude F = Kd (where K is a constant) in the opposite direction that the string is pulled (i.e. it is a restoring force). When the string is released will it execute simple harmonic motion? How do you know? If you are not sure then reread the section 14.2 of the text.

Explanation / Answer

3. in order to make the time of the clock fast to show correct time, we need to decrease the length of the pendulum since time period of a pendulum is directly proportional to the square root of the length of the pendulum.

4. yes the motion of the vibrating string will be simple harmonic in nature as we know that the wave produced in a stretched string is transverse in nature, so considering the way the particles vibrate , its found to be simple harmonic.

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