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Dx

I have two test questions that I missed AT school so i wrote them down. I wanted to know the correct answers as well as a short description of how they came up with that.

1) a simple pendulum consists of a mass attached to a weightless string L. For this system when undergoing small oscillation

a. frequency proportional to amplitude -->that was my original answer

b. period proportional to amplitude

c. frequency independent of mass

frequency is independent of length

My new answer from what I read and understand would be d, am i correct?

2) Simple pendulum A swings back n forth at twice the frequency of a simple pendulum B. what statement is correct?

a. B is twice as long as A

b. B is twice as massive as A

c the length of B is 4 times the length of A

d. the mass of B is 4 times the mass of A

i don't remember but i think the formula is 1/2pi * sqrt(g/L)

anyways can anyone tell me the correct answer and briefly why?

Thanks!

Dx