Gravity is the force which affects any body which is near the Earth's surface. Gravity is always directed vertically rather horizontal surface. To determine gravity rather easily.
Instruction
1. Originally it will be required to find the body weight for which gravity is defined. In order to find it out, it will be required to use a formula: m = p*V where p is the density of substance of this body, V - its volume. This formula is not only by means of which it is possible to find body weight. When finding gravity of a body, as a rule, makes a reservation that it is at rest. And it means that it is necessary to find not just body weight, namely the inert weight which formula of stay is stated above.
2. Example: It is required to find the mass of ice which volume of 22 m³. To solve this problem, it is required to find out what density of ice. These data can be emphasized from the table of density of various substances. Data not only data on density of solid bodies, but also loose, liquid, gaseous substances are its part. According to this table, density of ice is 900 kg/m³. Then the mass of ice will be so: m = 900*22 = 19800 kg or 19.8 t. Answer: the mass of ice is 19800 kg or 19.8 t.
3. Now, knowing body weight, it is possible to find also the size of gravity. For this purpose there is a formula: F = m*gprimer: It is required to find the ice block gravity which weight of 19800 kg. It is necessary to apply the specified formula to the solution of this task: F = 19800*9.81 = 194238 N (Newtonian) Answer: Gravity of a block of ice is 194238 N