Recent content by pcgmks

Would it be easier if i had a spring with a known spring constant k and change the arm length each time, ( i know that a larger arm will make it go further but has it got to do with torque or is it irrelevant to this experiment),

Independent variable and spring constant k Hi all, If someone could spare a minute to help answer my question I would appreciate it greatly, I am trying to design an experiment to investigate the efficiency of a catapult, But need help in what i should use as the independent variable-...