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(II) A particle is located at $\vec{\mathbf{r}}=(4.0 \mathbf{i}+3.5 \hat{\mathbf{j}}+6.0 \hat{\mathbf{k}}) \mathrm{m}$ .A force $\vec{\mathbf{F}}=(9.0 \hat{\mathbf{j}}-4.0 \hat{\mathbf{k}}) \mathrm{N}$ acts on it. What is the torque,calculated about the origin?

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$(-68 \hat{\imath}+16 \hat{\jmath}+36 \hat{k}) m \cdot N$

Physics 101 Mechanics

Chapter 11

Angular Momentum; General Rotation

Moment, Impulse, and Collisions

Rotation of Rigid Bodies

Dynamics of Rotational Motion

Equilibrium and Elasticity

University of Washington

Simon Fraser University

University of Sheffield

University of Winnipeg

Lectures

02:21

In physics, rotational dynamics is the study of the kinematics and kinetics of rotational motion, the motion of rigid bodies, and the about axes of the body. It can be divided into the study of torque and the study of angular velocity.

04:12

In physics, potential energy is the energy possessed by a body by virtue of its position relative to others, stresses within itself, electric charge, and other factors. The unit for energy in the International System of Units is the joule (J). One joule can be defined as the work required to produce one newton of force, or one newton times one metre. Potential energy is the energy of an object. It is the energy by virtue of an object's position relative to other objects. Potential energy is associated with restoring forces such as a spring or the force of gravity. The action of stretching the spring or lifting the mass is performed by a force which works against the force field of the potential. The potential energy of an object is the energy it possesses due to its position relative to other objects. It is said to be stored in the field. For example, a book lying on a table has a large amount of potential energy (it is said to be at a high potential energy) relative to the ground, which has a much lower potential energy. The book will gain potential energy if it is lifted off the table and held above the ground. The same book has less potential energy when on the ground than it did while on the table. If the book is dropped from a height, it gains kinetic energy, but loses a larger amount of potential energy, as it is now at a lower potential energy than before it was dropped.

03:10

A particle is located at $…

01:35

(II) A particle is located…

03:23

01:15

03:19

Force $\vec{F}=(-8.0 \math…

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06:22

02:30

Force F = (-8.0 N) i + (6.…

02:29

Torque RevisitedForce …

04:05

In unit vector notation, f…

02:25

What is the torque about t…

03:33

Force $\vec{F}=-10 \hat{\j…

03:47

What are the magnitude and…

01:24

The force of $20 \hat{\mat…

00:51

Force $\vec{F}=(-10 \hat{\…

02:20

A particle of mass 5.0 kg …

04:27

A particle is located at c…

03:05

A force $\vec{F}=(6.00 \h…

A force $(2.00 \hat{\mathr…

We know that Dark is given by cross product, off part and F on the used the dominant rule, which is given by a question 11.3 b to find this stock. So this will be goingto determining off the magics that parable. Right? So these are the directions. This will be the component off. The first factor it is, Sarge. And this will be the confidence off the second victim. It is force here. Make sure you include the signs on the directions. Now we find that the dominant off this metrics and this comes out to be 68 I gap this 16. Jake Gap, this 36 ski cap friend, the units don't hunger the units, so I forgot to mention them over here. So this will be last time. Snu done 30 meter times. New turn meter comes from the radius and Newton comes from the force. So this is the dark vectors, you know, I guess

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