1. The problem statement, all variables and given/known data These questions are regarding water undergoing SHM in a u-tube. Q1) What is the effect on the time period and damping in a u-tube when using oil instead of water? Q2) What is the effect on the time period if the liquid (inside the u tube) is heated? Q3) How can the internal diameter of the u-tube affect successive amplitudes of oscillations? Devise a suitable experiment. 2. Relevant equations N/A 3. The attempt at a solution Q1) T is unchanged; oil is more viscous so friction between inside of tube is greater thus oscillations die away quickly. Q2) Heating water makes it expand; length of water increases; T increases. Q3) I think the ratio between successive amplitudes should be the same... could plotting T against D (diamter) and observing the relationship be sufficient? Are these right? Can someone please expand on them? Many thanks.