an object travels in a circular orbit. If the speed of the object is halved, it's centripetal acceleration will be...
We know that
Centripetal acceleration
ac=v2ra_c=\frac{v^2}{r}ac=rv2
v′=v2v'=\frac{v}{2}v′=2v
New centripetal acceleration
ac′=v′2ra_c'=\frac{v'^2}{r}ac′=rv′2
ac′=v24ra'_c=\frac{v^2}{4r}ac′=4rv2
ac′=ac4a'_c=\frac{a_c}{4}ac′=4ac
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