Angular momentum is:

Question

BlackTom AI · Accepted Answer

To evaluate the statement about angular momentum, we need to recall its standard definition in classical mechanics.
Option 1: The product of moment of inertia and angular velocity. This matches the formula L = I ω, where L is angular momentum, I is the moment of inertia, and ω is the angular velocity. This is the correct description.
Option 2: The square root of angular velocity. This is not a quantity associated with angular momentum; taking a square root of ω has no canonical physical meaning in this context and would not yield the angular momentum.
Option 3: The sum of moment of inertia and angular velocity. Adding I and ω mixes two different physical dimensions and does not produce angular momentum, which is a vector quantity with specific units (kg·m²/s).
Option 4: The difference of angular velocity and momentum. This operation combines angular velocity with momentum, which are not directly subtractable to define angular momentum; the dimensional mismatch and incorrect relationship make this option invalid.
Overall, the only option that corresponds to the established formula for angular momentum is the first one, expressing L as the product of I and ω. The other options misrepresent the relationships between rotational quantities or apply inappropriate operations that do not yield angular momentum.

SPHY001 Practice Quiz - Unit 10 | LA050

Angular momentum is:

查看解析

登录即可查看完整答案

类似问题

Why does an ice skater spin faster when she folds her arms close to her body?

What is the equation to calculate an angular momentum for a particle and for a rigid object?

What is an angular momentum and what is its SI unit?

Angular momentum is:

A child swings a 0.38 kg ball in a circle on a string that is 1.3 m long. If the ball makes 1.2 rev/s, what is the magnitude of the ball's angular momentum?

An ice skater performs a fast spin by pulling outstretched arms down and close to her body. What happens to her angular momentum with respect to the axis of rotation?

How much angular momentum must be supplied by the hamstrings to bring a leg swinging at 20 rad/s to a stop, given that the leg’s moment of inertia is 0.7 kg.m2? NOTE: SI unit symbols must be used and round to two (2) significant figures. This question is worth two (2) marks.

Because angular momentum must be conserved, as a gas cloud contracts, it will also

更多留学生实用工具

考试浏览器助手

风格化写作助手

论文查重助手

文献引用助手

课堂转译助手

课堂笔记助手

Quiz搜索助手

学校历年真题

智能刷题助手

智能匹配练习

希望你的学习变得更简单