circular motion (1 Viewer)

[totallybord]

hi,
im just a bit stumped abt the difference between all the "t"s in tcosx=mg and t=mlw^2 and all the other t formulas...cld anyone explain to me since i dun do no physics so i dun understand the theory behind them
and if the question tells u to find the speed is that v o w?
thank u for that!

 

[Trebla]

'T' stands for tension in a string in the context to a conical pendulum. Tension is the 'strain' on a string when holding a weight. The 'T' pronumerals should all represent tension in a string, so they should all represent basically the same thing.

To get an idea of what tension is, think about an object vertically hanging off a string. The object has weight due to gravity pulling it downwards. But what stops the object from actually falling downwards? It's the tension of the string pulling the object back up and 'cancelling' the gravity force.

 

[108796]

It's the tension of the string pulling the object back up and 'cancelling' the gravity force.

also it cancels centripetal motion; well to be precise, it is a force that sums to give centripetal motion

and speed is v, angular velocity is w. for speed, u dont need direction, but for velocity u do, and same with w (ie clockwise/anticlockwise etc)

but the thing is YOU SHOULD HAVE DONE PHYS IF U DO 4U COZ U WOULD HAVE DONE WELL IN IT

 

[totallybord]

so is that the whole velocity is a vector thing? n what does it mean by displacement again ?
i wld have done physics bt i was like physics = maths so no thankssss