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Equilibrium Of Concurrent Forces - Practice Questions & MCQ

Edited By admin | Updated on Sep 18, 2023 18:34 AM | #JEE Main

Quick Facts

  • Equilibrium of concurrent forces is considered one of the most asked concept.

  • 14 Questions around this concept.

Solve by difficulty

A light spring balance hangs from the hook of the other light spring balance and a block of mass M Kg hangs from the former one. Then the true  statement about the scale reading is :

Three forces start acting simultaneously on a particle moving with velocity \vec{v}.These forces are represented in magnitude and direction by the three sides of a triangle ABC (as shown ).The particle will now move with velocity

Concepts Covered - 1

Equilibrium of concurrent forces

 

  • Concurrent Forces-If all the forces working on a body are acting on the same point then they are said to be concurrent. 

  • Three forces will be in equilibrium if they are represented by three sides of a triangle taken in order.

       

  • For equilibrium, 

$\begin{aligned} & \sum \overrightarrow{F_{n e t}}=0 \\ & \text { or } \sum \vec{F}_x=0, \sum \vec{F}_y=0, \sum \vec{F}_z=0\end{aligned}$

  • Lami’s theorem: It states that for three concurrent forces in equilibrium,

                                

                     $\frac{F_1}{\sin \alpha}=\frac{F_2}{\sin \beta}=\frac{F_3}{\sin \gamma}$

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Equilibrium of concurrent forces

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