UC知道SAT2物理题，涉及弹簧
来源：百度知道 编辑：UC知道 时间：2024/06/17 22:14:02
An object of mass m is attached to a vertically mounted spring that has spring constant k.The object is displaced from its equilibrium position and allowed to oscillate.Assume that air resistance and friction are negligible.To increase the frequency of the motion,one could
(A)increase the amplitude of the motion
(B)change to a spring with a greater spring constant
(C)mount the spring horizontally
(D)attach an objet of greater mass
(E)attach an object of the same mass but greater density
答案是B。谁能给解释一下为啥选B吗？谢谢
(A)increase the amplitude of the motion
(B)change to a spring with a greater spring constant
(C)mount the spring horizontally
(D)attach an objet of greater mass
(E)attach an object of the same mass but greater density
答案是B。谁能给解释一下为啥选B吗？谢谢
弹簧振子的周期公式为T=2pi*根号下（m/k）
因此频率f=1/T
可以看到弹簧振子的频率是由弹簧振子本身的静态性质来决定的，因此要想增大频率只有两个办法，那就是增大弹簧的弹性系数或者减小振子的质量。