In a lecture demonstration, a 3.0 m long vertical string with ten bolts tied to it at equal…

In a lecture demonstration, a 3.0 m long
vertical string with ten bolts tied to it at equal intervals is dropped from
the ceiling of the lecture hall. The string falls on a tin plate, and the class
hears the clink of each bolt as it hits the plate. The sounds will not occur at
equal time intervals. Why? Will the time between clinks increase or decrease
near the end of the fall? How could the bolts be tied so that the clinks occur
at equal intervals?