angular momentum has the same unit as
Correct answer: B. linear momentum x time
- A. impulse x distance
- B. linear momentum x time
- C. work x frequency
- D. power x time
Explanation
Angular momentum (L): Angular momentum is a measure of an object's rotational inertia and its rotational velocity. It is calculated using the formula:L = Iωwhere:I is the object's moment of inertia (a measure of its resistance to rotational acceleration)ω is the object's angular velocity (rate of change of angular position)Units of Angular Momentum: The units of moment of inertia (I) are typically kg*m^2. Angular velocity (ω) is measured in radians per second (rad/s). Therefore, the units of angular momentum (L) become:L = (kgm^2) * (rad/s) = **kgm^2/s**Therefore, based on the unit analysis, linear momentum (kg*m/s) x time (s) is the only combination that results in kg*m^2/s, which is the unit of angular momentum.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
About Angular and Linear Quantities
Rotational motion relates angular displacement, angular velocity and angular acceleration to linear displacement, tangential velocity and tangential acceleration through the radius. Questions use radians, v equals r omega and tangential acceleration, while distinguishing tangential velocity from centripetal acceleration and angular quantities from their linear counterparts.
Practise Rotational and Circular Motion
521 free Rotational and Circular Motion MCQs from Physics, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Physics questions like this
Physics is on 16 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Angular and Linear Quantities questions
center of mass is a point
if a force acts on a body whose action line does not pass through its center of gravity, then the body will experience
The physical quantity which produces angular acceleration in the body is
The physical quantity that produces angular acceleration in the body is
Rotational K.E. of a disc is:
Which of these statements is not correct