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Mcmenhweilleisi
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- Homework Statement
- Find
Tension T1
Tension T2
Tension T3
- Relevant Equations
- Obtain on the left weigs 40N and on the right 50N
Actually, the 4 equations are decoupled. One can find T1 and T2 from the FBD of the knot on the left and then find the rest from the FBD of the knot on the right.caz said:Shouldn’t you just sum the forces on each side of the second string. 4 eqs and 4 unknowns (T1, T2, T3, θ). I have no idea what a moment means for a string
Well you apply the moment equation as the string was some sort of rigid body (since it is taut).caz said:Shouldn’t you just sum the forces on each side of the second string. 4 eqs and 4 unknowns (T1, T2, T3, θ). I have no idea what a moment means for a string
Quite so.Delta2 said:I think the two ways are equivalent
Equilibrium is a state of balance where all forces acting on an object are equal and opposite, resulting in no net change in the object's position or motion.
The string in the center being exactly horizontal means that the forces acting on the object are balanced in both the vertical and horizontal directions. This allows the object to remain in a state of equilibrium.
The weight and position of the object, as well as the tension and angle of the string, can all affect the equilibrium of the object with the string in the center exactly horizontal.
If the string is not exactly horizontal, the forces acting on the object will not be balanced and the object may experience a change in position or motion. This will result in the object being out of equilibrium.
Equilibrium with the string in the center exactly horizontal is commonly used in physics experiments and demonstrations, such as the famous "tablecloth trick" where a tablecloth is quickly pulled out from under a set of dishes without disturbing them. It is also important in engineering and architecture to ensure the stability and balance of structures.