A-Level Maths: S1-20 Tilting: Example 1

[danielmoss]

Thank you so much! This has been a hard topic for me but your videos help greatly

[a.]

Do you know how it says in the question "just remains in equilibrium", wouldn't that mean that the beam is, at that moment, still resting on support C. And therefore wouldn't there still be a normal reaction force at C?

[aashav]

This might sound like a stupid question, but why is the point of tilting at B and not C?

[tiegan]

I don't understand why we're using g=9.8 here but not in most of the other examples. Why do we use it here?
Is it because it's a gravitational force (mg) instead of an applied force (N)?

[iluvatar]

What would be wrong if you just took moment about B so less work to do?

[rosieh]

If it just remains in equilibrium does that mean that it doesn't tilt at all and stays resting on B&C? or can it tilt a bit and still be in equilibrium?

[samuelbarrfitness]

Thanks for the help. Would my answer still be correct if I wrote m<22.5kg?

[jordanw]

Would there not also be a reaction force between the particle and the rod at A?

[anonymousbby]

How dyk that the distance between rb and the point of mass is 1.5?

[jannah]

the question doesnt say that its tilting so how would yu know?