Question
A mass is moving in uniform circular motion under the effects of a centripetal force. If the force is doubled and the radius is cut in half, by what factor will the speed change?
It will double. <----
It will be cut in half.
It will not change.
It will quadruple.
It will be √2 times faster
It will double. <----
It will be cut in half.
It will not change.
It will quadruple.
It will be √2 times faster
Answers
Damon
F = m v^2/r so v^2 = F r/m
2F = m V^2/.5r so V^2 = F r/m
The same
2F = m V^2/.5r so V^2 = F r/m
The same