When the mass of a simple pendulum is tripled, the time required ...

[Davideckstein7]

When the mass of a simple pendulum is tripled, the time required for one complete vibration
 
  A) increases by a factor of 3.
  B) does not change.
  C) decreases to one-third of its original value.
  D) decreases to 3/4 of its original value.
  E) increases to 4/3 of its original value.

Question 2

Limestone is a common type of
 
  A) metamorphic rock
  B) meteoritic rock
  C) igneous rock
  D) sedimentary rock

[IAPPLET]

Answer to Question 1

B

Answer to Question 2

D