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 of decrease near the end of the fall? how could the bolts be tied so that the clinks occur at equal intervals?