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2 days ago · Newton's first law expresses the principle of inertia: the natural behavior of a body is to move in a straight line at constant speed. A body's motion preserves the status quo, but external forces can perturb this. The modern understanding of Newton's first law is that no inertial observer is privileged over any other.
4 days ago · Archimedes’ principle, physical law of buoyancy, discovered by the ancient Greek mathematician and inventor Archimedes, stating that any body completely or partially submerged in a fluid ( gas or liquid) at rest is acted upon by an upward, or buoyant, force, the magnitude of which is equal to the weight of the fluid displaced by the body.
- The Editors of Encyclopaedia Britannica
- What led to Archimedes’ discovering his principle?King Heiron II of Syracuse had a pure gold crown made, but he thought that the crown maker might have tricked him and used some silver. Heiron aske...
- What is Archimedes’ principle?A body at rest in a fluid is acted upon by a force pushing upward called the buoyant force, which is equal to the weight of the fluid that the body...
- What is Archimedes’ principle used for?Archimedes’ principle is very useful for calculating the volume of an object that does not have a regular shape. The oddly shaped object can be sub...
- What is the formula for buoyant force?The buoyancy force (B) is equal to the weight (W) of the fluid that a body in that fluid displaces. The weight W can be written in terms of the den...
4 days ago · The Pressure of Water. November 1857 Issue. The Sciences. Water exerts the pressure caused by its own weight and that of the air above it, equally in all...
5 days ago · From this equation one can derive the equation for pressure by its thermodynamic definition: p ( v , e ) ≡ − ∂ e ∂ v = ( γ − 1 ) e v {\displaystyle p(v,e)\equiv -{\partial e \over \partial v}=(\gamma -1){\frac {e}{v}}}
4 days ago · To calculate pressure, the formula is elegantly simple: \ [ P = \frac {F} {A} \] where: \ (P\) is the pressure, \ (F\) is the force applied, \ (A\) is the area over which the force is distributed. This formula can also be rearranged to solve for force or area, making it a versatile tool in physics and engineering. Example Calculation.
Note: The students may think that pressure is defined as force per unit area and force is a vector quantity. Hence, pressure must be a vector quantity. But the actual formula of pressure is magnitude of force divided by the magnitude of area. Hence, pressure is a scalar quantity and not a vector quantity.
4 days ago · It bridges the gap between macroscopic observations and the microscopic forces at play, providing a crucial tool for engineering and physics. Calculation Formula. To calculate the pressure exerted by a mass on a surface, the formula is as follows: \[ P_m = \frac{TM \times g}{SA} \] where: \(P_m\) is the pressure from mass in Pascals (Pa),
