Question

the magnitude of centripetal force cannot be expressed as
a)mrw^2
b)l^2/m^2
c)0.4π^2m/s^2
d)l^2/mr^3
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Answer 1

Answer:

the magnitude of centripetal force cannot be expressed as

a)mrw^2

Answer 2

a)mrw^2

Explanation:

All the options that can express correctly the magnitude of centripetal force will have the same dimensions.

Perform dimensional analysis of the options and you will find out that the first option has dimensions of M1 L3 T-4.

Now, centripetal force itself is a force, and it will also have the dimensions of a force. Thus, its dimensions will be M1 L1 T-2, which is the same as all other options. Therefore the answer.