All Questions
Tagged with equilibrium torque
69
questions
1
vote
2
answers
169
views
The forces acting on the tensegrity structure
Are these the only forces acting on the body. I assumed the COM to be somewhere there in between. since the tension in main string doesnt perfectly coincide with COM theres a small torque being ...
- 11
0
votes
2
answers
55
views
Direction of the normal force [closed]
Suppose we have a bar with non-zero mass inside a hemispherical bucket fixed to the ground. Suppose, too, that there is friction between the bar and the inner spherical surface of the bucket. Part of ...
0
votes
1
answer
50
views
Rotational Equilibrium With Forces acting on only two points
Imagine a rod that is held at angle to the vertical by some hook. The rod is in equilibrium. There would be three forces on this rod - Normal contact, Friction, and the weight of the rod.
I struggle ...
- 568
0
votes
0
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123
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Calculate weight distribution on 2D plane
I am trying to figure out how I can have a formula for the weight distribution on a square. But let me just describe what I am doing,
We have the classical horizontal beam support problem
And I we can ...
- 13
0
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0
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65
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2 rods connected at a pivot and attached to a spring
I have a question concerning this problem
First I calculate F1 by taking the origin at F2 and imposing equilibrium for the torque thus getting $ F_1 = \frac{a}{a+b} F $ and similarly for F2, then I ...
2
votes
1
answer
71
views
Free body diagram of two cards leaning against each other [closed]
here is my body diagram:
he have the two weights two normals and two frictions however I think I am missing something becaused I only have cosine components when analysing the torque eq with respect ...
- 111
0
votes
1
answer
53
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Equilibrium of rods and stress
Reading through Theory of Elasticity, Landau & Lifshitz, I got stuck in the The equations of equilibrium of rods, on page 82. The part I do not understand is the following:
"We denote by $\...
- 115
1
vote
1
answer
74
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How much force is each leg supporting? [closed]
Assuming that the plank rotate in the red dot and it weights 10kg, how can we calculate the weight or force each leg is supporting?
I tried the following system, assuming the left most leg is ...
- 11
1
vote
0
answers
25
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In a DC motor, why would the rotor oscillate around its stable equilibrium point, had there been a constant current?
If I choose to replace the commutator in the motor with two slip rigs like those in the AC dynamo, then when the plane of the motor is normal to the magnetic field, aligning, therefore, the magnetic ...
- 959
1
vote
1
answer
252
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Torque equilibrium of a cylinder
In the process of deriving the stress tensor of a cube which is shown in the picture below, it is concluded from the torque equilibrium equation that $\sigma_{ij}$ is equal to $\sigma_{ji}$. I am ...
4
votes
2
answers
689
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Morin 2.16 - Balancing a semi-infinite stick
Problem 2.16 from Morin's Classical Mechanics:
Given a semi-infinite stick (one that goes off to infinity in one direction), determine how its density should depend on position so that it has the ...
- 69
0
votes
1
answer
20
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Mathematical equation of the obliquely balanced system [closed]
why doesn't the system behave like a pendulum?
1. state of equilibrium (the pivot point of the bar is at the center of gravity)
How do we write the equilibrium equation of the system in the 1st ...
0
votes
2
answers
423
views
For rotational equilibrium of a rigid object, about which point does the torque of the body have to be zero?
In the definition of rotational equilibrium for a rigid body, the net torque about a point has to be zero.
Now, about which point will the torque be calculated? Will it be the centre of mass or centre ...
-1
votes
2
answers
391
views
What the are forces acting on a wheel of a moving bicycle?
For the wheel of moving bicycle or bike why is net torque $0$
i.e $\tau_{\text{NET}}=0$?
If it can be shown that the wheel is in translational equilibrium i.e. $\sum_{}^{}\vec{F}=0$ then it's also in ...
- 658
0
votes
2
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68
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Question regarding the choice of axis to satisfy equilibrium conditions
I have a question regarding the choice of axis needed to satisfy the equilibrium conditions of $F_y=0$ and $F_x=0$ as demonstrated in the picture below.
My question is, can we choose any axis ...
- 87