Space Time & Motion A.2 Forces & Momentum (id: 9d73bfb92)

本题目来源于试卷: Space Time & Motion A.2 Forces & Momentum，类别为 IB物理学

[单选题]
A spring of negligible mass andfq vk6x4w fp- /hen,8qdflj2 nws*6 5t length of $l_o$ is attached to a fixed point. When the spring is extended by an external force $F$, the length of the spring increases to $l$. The graph shows how the length of the spring varies with the tension in spring. The tension in the spring is equal to where $k$ is a constant $k \Delta l$, and $\Delta l$ is the extension of the spring.

What are the gradient and y-intercept of the graph?

A. $\frac{1}{k}$ and $l$
B. $\frac{1}{k}$ and $l_o$
C. $k$ and $l_o$
D. $\frac{1}{k}$ and $\Delta l$


参考答案:  B


本题详细解析:

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