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an experiment is conducted to determine how the arm length of a pendulum affects its period the experimental design calls for varying the length of the arm and the mass of the bob which is true about this experiment, based on a good experimental design?


only the mass should be changed. the arm length should remain the same


the force applied to the mass should be varied for each trial


only the arm length should be changed. the mass should remain the same


the material the arm is made of should be varied for each trial

Verified Answer :

mpanderla95

I believe the correct statement for maintaining good experimental design would be only the arm length should be changed and the mass should remain constant or same.

samueladesida43

In this experiment, only the arm length should be changed. the mass should remain the same

INDEPENDENT VARIABLE:

  • Independent variable, in an experiment, is the variable that is changed by an experimenter in order to bring about a change.

  • According to this question, an experiment is conducted to determine how the arm length of a pendulum affects its period. This means that the variable being tested is the length of the arm.

  • Based on a good experimental design, only one variable should be changed at a time, hence, only the arm length should be changed. the mass should remain the same.

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