Centripetal acceleration/ motion question

[chudzoik]

I am trying to calculate the speed of an object at the point that it flys off the half circle ramp, and I was wondering if it would be correct to use the formula v²=v²0+2aΔx to calculate the final velocity of the object as it exits the half circle thing.

 

[tiny-tim]

welcome to pf!

hi chudzoi! welcome to pf!

(what does centripetal acceleration have to do with this? )

… I was wondering if it would be correct to use the formula v²=v²0+2aΔx to calculate the final velocity of the object as it exits the half circle thing.

that's a linear acceleration formula, isn't it?

hint: always check first whether you can use a conservation equation

 

[chudzoik]

I honestly have no idea what your hint means :tongue:
Can you explain further about what formula I'm supposed to use?

 

[tiny-tim]

do you know any equations called "conservation of (something)"?

(i may have gone to bed by the time you answer :zzz:)

 

[chudzoik]

Well I know conservation of momentum, but I don't know how it would apply to my question.

 

[tiny-tim]

aha!

you'll need to look up conservation of energy

 

[chudzoik]

Is that the formula with 1/2 mv² and mgh in it? I looked it up and it came up with stuff like Δ(U+K) = 0 and U + K = E which don't look familiar to me at all. I'm in Grade 12 right now, so should I have learned it?

 

[SHISHKABOB]

yeah that's what you'll be wanting to use for this problem, it's the same idea as conservation of momentum: initial = final