a = v^2/r
a' = v^2/(r/2) = 2 v^2/r = 2 a
The radius of the path of an object in uniform circular motion is halved. The centripetal acceleration needed if its speed remains the same is _____.
-half as great,
-the same as before,
-twice as great as before, or
-four times as great as before?
could somebody explain the answer for me?
im unsure about what the answer is.
3 answers
Twice as great before is the answer
DANGGG THIS WAS IN 2015??
4 answers