Answer:
Increasing the length of the pendulum quantitatively increases the time period of oscillation.
Explanation:
Given data,
A grandfather's clock keeps time by making 60 swings in 60 seconds.
After two hours the clock is slow by 1.5 minutes.
The time period of oscillation is given by the formula,
[tex]t=2\pi \sqrt{\frac{l}{g}}[/tex]
Where 'l' is the length of the pendulum clock.
Increasing the length of the pendulum quantitatively increases the time period of oscillation.