The results are as follows: 1. The spring oscillator moves harmoniously, the velocity at T1 is V, the velocity at T2 is V, and the direction is the same. Given that (t2-t1) is less than the period T, then (t2-t1) The results are as follows: 1. When the spring oscillator moves harmoniously, the velocity is V at T1 and V at T2, and the direction is the same. It is known that (t2-t1) is less than period T, then (t2-t1) () A. May be greater than a quarter of a cycle B. may be less than a quarter of a cycle C. It must be less than half period D. it may be equal to half period D Why don't you choose D?

The results are as follows: 1. The spring oscillator moves harmoniously, the velocity at T1 is V, the velocity at T2 is V, and the direction is the same. Given that (t2-t1) is less than the period T, then (t2-t1) The results are as follows: 1. When the spring oscillator moves harmoniously, the velocity is V at T1 and V at T2, and the direction is the same. It is known that (t2-t1) is less than period T, then (t2-t1) () A. May be greater than a quarter of a cycle B. may be less than a quarter of a cycle C. It must be less than half period D. it may be equal to half period D Why don't you choose D?

If it's a half period, is it on the two zero points of the maximum and minimum, which two points have no velocity