In the experiment of Hooke's Law and Simple Harmonic Motion, different masses (and weights) were placed on the hanger connected to a spring, and elongations from the equilibrium position were measured. The spring was obtained from Hooke's Law (for applied force) F = kX. If the spring were compressed (instead of elongated) and applied forces and corresponding compression amounts were used to calculate, then the k from compression data will be higher than that from elongation data. The k from compression data will be lower than that from elongation data. The k from compression data will be the same as that from elongation data. The k from compression data may be higher or lower than that from elongation data depending on the toughness (strength) of the spring. Additional information is required to answer this question.
19. The applied force was calculated as the weight of the total mass (mass kept on the hanger + mass of the hanger + mass of the spring). The value of k was calculated as the slope of the best-fit straight line relationship between force and elongation. If the mass of the spring was not added to the total mass, the calculated k will be the same as before. It will be higher than before. It will be lower than before. It may be higher or lower or stay the same depending on the toughness of the spring. None of the above.
20. The Lab Pro unit (the unit with which you connected all the sensors) measures the quantities (e.g. velocity, acceleration, etc.) and transfers the information collected by the sensors to the computer for the purpose of displaying the information in a readable format. The function of the Lab Pro unit is not needed at all because the sensors can do all of these. Only (a) and (c) are correct. None of the above.