What is the tension in the strings when the slender bar begins oscillating

[Ayenyen]

Homework Statement

There is a uniform slender bar which is suspended by two light inextensible strings and hangs in equilibrium. (if the mass and length of the bar are m and 2b )

Now, someone slightly knocks one end to make the bar rotate around the vertical axis with initial angular velocity ω₀.

I want to know two things

(1) what is the tension in the strings when the slender bar begins to rotate?

(2) What is the rotation angle of the bar when the center of mass reaches its highest position?

Homework Equations

[/B]
ΣF=0,ΣMG=0 equilibrium equations

ΔT=−ΔV Low of conservation of mechanical energy

The Attempt at a Solution

Can I use the equilibrium equations and conservation of mechanical energy for these problems?

 

[BvU]

Hello Ayenyen,

Please use the homework template. We are not allowed to assist without your own attempt at solution.

 

[TSny]

Homework Equations

[/B]
ΣF=0,ΣMG=0 equilibrium equations

ΔT=−ΔV Low of conservation of mechanical energy

The Attempt at a Solution

Can I use the equilibrium equations and conservation of mechanical energy for these problems?

Once the bar is set into rotation, the equilibrium equations are no longer valid. Question (1) will require application of dynamics.