Drinking-Straw Microbalance and Seesaw: Stability and Instability
MetadataShow full item record
The mechanics of a beam balance are little appreciated and seldom understood. We here consider the conditions that result in a stable balance, with center of gravity below the fulcrum (pivot point), while an unstable balance results when the center of gravity is above the fulcrum. The highly sensitive drinking-straw microbalance, which uses a plastic drinking straw as a rigid beam, is briefly described with some slight convenient modifications. Different placements of the center of gravity are considered analytically to explain the equilibrium neutrality, stability, and instability of such beam balances as the microbalance, the playground “seesaw” or “teeter-totter,” the “dipping bird,” and other toys and magic tricks.
Showing items related by title, author, creator and subject.
Xiao, J.; Hill, Keith; Moore, K.; Williams, S.; Dowson, L.; Borschmann, K.; Dharmage, S. (2012)Background/Purpose: Older people commonly have concerns about their balance and mobility. This study aimed to identify the prevalence of mild balance dysfunction in community-dwelling older people with self-expressed ...
Luo, Yadong; Zheng, Q. (2016)Purpose – The purpose this paper is to comment on the “Global Implications of the Indigenous Epistemological System from the East: How to Apply Yin-Yang Balancing to Paradox Management” (Li, 2016), which is a timely and ...
Effectiveness of a targeted exercise intervention in reversing older peoples mild balance dysfunction: A randomised controlled trailXiao, J.; Hill, Keith; Moore, K.; Williams, S.; Dowson, L.; Borschmann, K.; Simpson, J.; Dharmage, S. (2012)Background: Previous research has mainly targeted older people with high risk of falling. The effectiveness of exercise interventions in older people with mild levels of balance dysfunction remains unexplored. Objective: ...