Forces in fluids and density
Forces in fluids and density
A fluid is a substance that can flow, so liquids and gases are both fluids. An object in a fluid may experience weight downward, upthrust upward, and drag opposite its motion.
Step-by-step lessons on Edexcel A Level Physics Density, upthrust and viscous drag. Each one builds up to exam-style questions. Physics is one of the most mathematically demanding A Levels -- at least 40% of the marks across the three papers require maths skills at Level 2 (GCSE) standard or above, so build calculation and graph-handling fluency alongside the conceptual content from the start.