Any help is appreciated!

A grandfather clock is based on the period of oscillation of a pendulum. The clock keeps
perfect time on the first floor of the Sears tower but when carefully moved to the top
floor h=436 m above the surface of the earth, the clock is found to be slow.
(a) What is the reason for this?
(b) How many seconds does the clock loose in one day on the top floor?
(The radius of the earth is R=6.37.
106 m)

(a) The reason for the grandfather clock being slow when moved to the top floor of the Sears Tower is due to a change in gravitational force. The force of gravity is weaker at higher altitudes, so the pendulum's period of oscillation, and thus the clock's timekeeping, is affected.

(b) To calculate the number of seconds the clock loses in one day on the top floor, you need to determine the difference in gravitational acceleration between the first floor and the top floor, and then calculate the change in the pendulum's period.

We can use the formula for gravitational acceleration:

g = G * (M / R^2)

Where g is the gravitational acceleration, G is the gravitational constant, M is the mass of the Earth, and R is the distance from the center of the Earth to the location.

We can assume that the mass of the Earth remains constant, so the change in gravitational acceleration can be calculated as:

Δg = g_top - g_first

The change in the pendulum's period can be calculated using the equation:

ΔT = (T_first * Δg) / g

where ΔT is the change in the period, T_first is the period of oscillation on the first floor, Δg is the change in gravitational acceleration, and g is the gravitational acceleration on the first floor.

Therefore, to calculate the number of seconds the clock loses in one day on the top floor, you need to know the period of oscillation on the first floor, which is not provided in the question.