What mass could be lifted by the centrifugal force of an object having a mass of 98g if it were revolving in a horizontal circle, 20cm in diameter, and making 240 revolutions/min?

Question

mww · Answer

Try using 
$$F = \frac {mv ^{2}}{r} $$ 
Convert revolutions per minute into metres per second.

mrnood · Answer

this question is flawed in many ways.

a) It is centriPETAL force that causes circular motion (centrFUGAL force is not a real force)

b) centripetal force does no work

c) The question says the force is horizontal - therefroe it cannot 'lift' anything.

d) WHY use grams , cm  - go  with kg and m to get with the metric system

IF it meansd what could the EQUIVALENT magnitude of the force lift then  use 
the equation above to work out F

then - the weight of the mass is Mg

so Mg = mv^2/r

(M is mass lifted, m= 98 grams)