Linked Questions

2 votes
2 answers
1k views

What is the importance of torque direction? [duplicate]

I understand the right-hand rule and direction of the force on an arm, but what exactly is this 'direction' that results from the cross product of the vectors $T = r \times F$? On paper, what is this ...
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2 votes
2 answers
223 views

Why the cross product of two vectors gives a vector in an orthogonal direction? [duplicate]

I understood the concept of cross product with an example of Torque. I understood the concept. But what confuses me is that how can cross product of two orthogonal vector in a plane give us the ...
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  • 326
0 votes
1 answer
1k views

What is the intuition behind the direction of torque? [duplicate]

I've seen the other posts on this question, but unfortunately I'm still having difficulty understanding the meaning of the direction of the torque vector. It makes intuitive sense that the magnitude ...
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0 votes
2 answers
245 views

Why Angular velocity is a vector quantity and why it got direction perpendicular to the plane [duplicate]

Because linear velocity is a vector which I can agree as it's because of the direction of the displacement but in case of angular velocity it's angles covered in certain time but angles got no ...
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55 votes
8 answers
11k views

Why do we use cross products in physics?

We can define cross products mathematically like if we take two vectors, we can find another vector with certain properties but why do we use it in physics, if we consider a hypothetical physical ...
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  • 1,404
22 votes
5 answers
16k views

Why does torque point perpendicular to direction of the motion?

I have an intuition problem calculating torque using the cross product formula. As for example let the magnitude of the force be 50 lbs and length of the wrench be one foot and you are exerting ...
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3 votes
6 answers
2k views

Why is the direction of cross products of two vectors perpendicular to the plane? [closed]

Why is the direction of cross products of two vectors perpendicular to the plane? How is that possible?
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8 votes
7 answers
4k views

Why is torque a cross product?

If I'm not wrong, torque is perpendicular to both the radius and force i. e. It is along the axis of rotation. Questions that arise are- why do we consider the length between the axis/point of ...
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  • 109
2 votes
8 answers
1k views

The nature of torque as a vector [duplicate]

I can’t comprehend torque’s role properly: What is torque’s nature? Is it some kind of energy? Because its unit is ($\mathrm{N\cdot m}$) and ($\mathrm{N\cdot m}$) is similar to (Joules) and it's ...
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  • 21
4 votes
5 answers
277 views

How to derive the formula for angular velocity?

In my mechanics course, we entered rotational mechanics. We were previously introduced to the idea of angular velocity in 2-dimensions as follows, $$v=\omega r$$ Where $v$ stands for angular velocity....
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  • 420
0 votes
3 answers
576 views

What exactly is a torque?

I know there are a number of questions concerning torque on this site, but I still don't quite understand what it is. A video by veritasium on gyroscopic precession on you tube really got me puzzled ...
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  • 2,241
0 votes
3 answers
652 views

Torque and Angular Momentum Relation?

Suppose we have a tyre hanging in mid air and has a metal rod in the middle of the tyre. If we apply a force at the end of the tyre then a Torque will be produced. I heard from someone that if we ...
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0 votes
3 answers
318 views

If the net external moment on a body about a point is zero

I was told that If net external moment of some forces is zero about a point, then the net external force passes through the point. I know it's not true in general, what was the special condition ...
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  • 107
0 votes
2 answers
105 views

Angular velocity, Angular Momentum and Torque considered vectors to explain gyroscope precession and related phenomena? [closed]

Are angular velocity, angular momentum and torque "real" vectors in the sense that acceleration and force are? Or are they only considered vectors to explain phenomena like gyroscope ...
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  • 53
-1 votes
1 answer
52 views

Direction of torque in this situation [closed]

Suppose a body is rotating with uniform speed i.e. dv/dt=0(all the drags and frictions are zero) then what will be the direction of torque or will it actually exist?since the only force is acting ...
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