PHYS 1430 Pre-Lab 5: Uniform Circular
Motion Questions With Correct Answers
What bis bthe bdirection bof bcentripetal bacceleration? b- bcorrect banswers✔✔It bis
bdirected bradially btoward bthe bcenter bof bthe bcircle.
Does bthe bvelocity bof ban bobject bthat bis bundergoing buniform bcircular bmotion
bchange? b- bcorrect banswers✔✔yes
If byou bhave b25 brevolutions bin b15 bseconds, bwhat bis bthe bfrequency bof brotations bin
brev/s? b(Hint: bAnswer bshould bbe bin btwo bsignificant bfigures.) b- bcorrect
banswers✔✔1.7 brev/s
What bprovides bthe bcentripetal bforce bin bthis bexperiment? b- bcorrect banswers✔✔A
bstretched bspring.
What bdoes bNewton's bThird bLaw bstate? b- bcorrect banswers✔✔When bone bparticle
bexerts ba bforce bon ba bsecond bparticle, bthe bsecond bparticle bwill bexert ban bequal
bforce bin bthe bopposite bdirection bon bthe bfirst bobject.
What bdoes bNewton's bSecond bLaw bstate? b- bcorrect banswers✔✔If bacted bupon bby
ban bunbalanced bexternal bforce, ban bobject bwill bbe baccelerated bin bthe bdirection bof
bthe bforce bwith ban bacceleration bthat bvaries bdirectly bwith bthe bunbalanced bforce band
binversely bwith bthe bobject's bmass.
What bdoes bNewton's bFirst bLaw bstate? b- bcorrect banswers✔✔An bobject bthat bis bat
brest b(if bmoving), bremains bat brest b(keeps bmoving) bunless bacted bupon bby ba bnew
bexternal bforce.
Define bAngular bDisplacement band bthe bsymbol bused. b- bcorrect banswers✔✔The
bmeasure bof bthe bangular bdistance bthrough bwhich ban bobject bmoves bwhen
bundergoing bcircular bmotion. bThe bsymbol bused bis, bθ.
Define bAngular bSpeed band bthe bsymbol bused. b- bcorrect banswers✔✔The btime brate
bof bchange bof bangular bdisplacement. bThe bsymbol bused bis, bω.
Motion Questions With Correct Answers
What bis bthe bdirection bof bcentripetal bacceleration? b- bcorrect banswers✔✔It bis
bdirected bradially btoward bthe bcenter bof bthe bcircle.
Does bthe bvelocity bof ban bobject bthat bis bundergoing buniform bcircular bmotion
bchange? b- bcorrect banswers✔✔yes
If byou bhave b25 brevolutions bin b15 bseconds, bwhat bis bthe bfrequency bof brotations bin
brev/s? b(Hint: bAnswer bshould bbe bin btwo bsignificant bfigures.) b- bcorrect
banswers✔✔1.7 brev/s
What bprovides bthe bcentripetal bforce bin bthis bexperiment? b- bcorrect banswers✔✔A
bstretched bspring.
What bdoes bNewton's bThird bLaw bstate? b- bcorrect banswers✔✔When bone bparticle
bexerts ba bforce bon ba bsecond bparticle, bthe bsecond bparticle bwill bexert ban bequal
bforce bin bthe bopposite bdirection bon bthe bfirst bobject.
What bdoes bNewton's bSecond bLaw bstate? b- bcorrect banswers✔✔If bacted bupon bby
ban bunbalanced bexternal bforce, ban bobject bwill bbe baccelerated bin bthe bdirection bof
bthe bforce bwith ban bacceleration bthat bvaries bdirectly bwith bthe bunbalanced bforce band
binversely bwith bthe bobject's bmass.
What bdoes bNewton's bFirst bLaw bstate? b- bcorrect banswers✔✔An bobject bthat bis bat
brest b(if bmoving), bremains bat brest b(keeps bmoving) bunless bacted bupon bby ba bnew
bexternal bforce.
Define bAngular bDisplacement band bthe bsymbol bused. b- bcorrect banswers✔✔The
bmeasure bof bthe bangular bdistance bthrough bwhich ban bobject bmoves bwhen
bundergoing bcircular bmotion. bThe bsymbol bused bis, bθ.
Define bAngular bSpeed band bthe bsymbol bused. b- bcorrect banswers✔✔The btime brate
bof bchange bof bangular bdisplacement. bThe bsymbol bused bis, bω.
