Grandfather Clocks Are Designed So They Can Be Adjusted by Moving

Multiple Choice

Grandfather clocks are designed so they can be adjusted by moving the weight at the bottom of the pendulum up or down.Suppose you have a grandfather clock at home that runs fast.Which of the following adjustments of the weight would make it more accurate? (There could be more than one correct choice. )

A) Raise the weight.
B) Lower the weight.
C) Add more mass to the weight.
D) Remove some mass from the weight.
E) Decrease the amplitude of swing by a small amount.