Statics & Pressure
Every statics & pressure calculator on CalcEngines — each with its formula, a worked example, the standard it follows and the assumptions it makes.
5 calculators in this section
- Buoyancy and Archimedes Principle Calculator: Float or Sink?Buoyant force, apparent weight, and the verdict — floats or sinks — from one comparison: the object's density against the fluid's. The headline is the fraction of the object that ends up under the surface, which is the density ratio and nothing else, and the diagram puts the block at exactly that depth.
- Centre of Mass Calculator: Two or Three Masses on a LinePut two or three masses anywhere on a line and this finds the one point the whole system behaves as if it were at — the balance point, the point gravity acts through, the point that moves in a smooth curve while everything else tumbles. It also shows the thing most pages skip: the centre of mass need not be anywhere near any of the mass.
- Pressure and Hydrostatic Pressure Calculator: P = F/A and ρghTwo pressures on one page, and the question is always which one the examiner wants. P = F/A for a force spread over a contact area, and P = P₀ + ρgh for a point inside a liquid — and a switch that lets you answer in gauge pressure or in absolute pressure, which is the distinction that costs the marks.
- Reduced Mass Calculator: μ = m₁m₂/(m₁+m₂)The reduced mass is the trick that turns a two-body problem into a one-body problem. Give it two masses and it returns μ, the single mass that one imaginary particle would need in order to move exactly as the real pair does — together with the two orbit radii, the moment of inertia, and the proof that μ is always smaller than either mass you put in.
- Weight on Other Planets Calculator: Your Weight Across the Solar SystemYour mass does not change when you leave Earth. Your weight changes enormously — by a factor of 33 between Pluto and Jupiter. Enter your mass once and read your weight on ten worlds, with the surface gravity and radius taken from NASA's Planetary Fact Sheet, and a height box so you can watch the weight fall as you climb away.