How is density calculated? It can be obtained from the simple equation density=mass/volume. It's the MASS that creates gravity, not density. List 2 may change from point to point does not depend on direction of projection remains constant depend on direction of projection View solution If R is the radius of the earth and g the acceleration due to gravity on the earth's surface, then mean density of the earth is: Weight. In other words, this gravity correction could significantly be magnified in mountainous regions even if an anomalous density there does not necessary reach the largest values. An increase or decrease in temperature causes the expansion or contraction, respectively, in the size of the object. So, knowing the surface gravity of Earth, and the radius of the Earth, we could only calculate it's total mass, and from that, the average density of the planet. Gravity does not depend on density. The density (more precisely, the volumetric mass density; also known as specific mass), of a substance is its mass per unit volume.The symbol most often used for density is ρ (the lower case Greek letter rho), although the Latin letter D can also be used. The rotation rate of the rocket does not depend on one's choice of reference point. Q: Is there a relationship between density and gravity? Question is ⇒ The bulk density of aggregates does not depend upon :, Options are ⇒ (A) size and shape of aggregates, (B) specific gravity of aggregates, (C) grading of aggregates, (D) size and shape of the container, (E) , Leave your comments or Download question paper. However, a person standing on the Earth's surface feels less gravity when the elevation is higher. The densities of the different layers will not change the surface gravity (though it will affect how gravity varies within the planet) . However, this doesn't mean that gravity depends on density, but solely on the mass. The pressure exerted by a static liquid depends only on the depth, density of the liquid, and the acceleration due to gravity. Gravity-dependent atelectasis refers to a form of lung atelectasis which occurs in the dependent portions of the lungs due to a combination of reduced alveolar volume and increased perfusion. What I mean is, not really. The gravitational force equation shows that clearly: As I said: gravity depends only on mass. This is because density changes with temperature and pressure due to properties of intermolecular interactions. Density is defined as the mass per unit volume of a substance. Lv 4. Source(s): https://shrinkurl.im/a0LAJ. Introduction. Buoyancy Depends On. Lv 6. does the weight lose on the moon depend up on the specific gravity of the object? 19,084 2,590. Density is what we normally refer to as “weight” of a fluid. Density is a concept with which we are really familiar. According to the SI system of units, the unit of density is kilogram per cubic meter or Kg/m 3. It is very commonly seen in the posterior lung bases on CT, particularly in elderly individuals. If the density of the Earth were constant (per the green 'constant density' line), the gravity would just decrease linearly. Specific gravity is a relative measure of density, since you are calculating the ratio of a density of an unknown substance to the density of a reference substance (usually water) at a specified temperature and pressure. Gravity does not depend on density. Oct 16, 2011 #6 RandyLowe. Jbriggs already pointed this out and so did I. At zero gravity the object will have the same mass as at a higher gravity. Gravity depends on the distance from Earth’s center: 2 E r GM g= Differentiating this equation, you will find that the change in gravity with a change in elevation is: Dg=0.3086Dh (mgal) (m) How does gravity change from the ground to the roof of CCIS? Relative density, or specific gravity, is the ratio of the density (mass of a unit volume) of a substance to the density of a given reference material. As per Ideal Gas Law; PV = nRT. As the density depends on temperature, the specific gravity depends on the temperatures to which the densities of the substance and the reference relate. The force of gravity keeps all of the planets in orbit around the sun. A person flying at 9,100 m (30,000 ft) above sea level over mountains will feel more gravity than someone at the same elevation but over the sea. Density plays a vital role in fluid mechanics. The situation gets more complicated. Gravity does not depend on density. Share . How can you predict if an object will float or sink? Specific gravity is dependent on the temperature, and most of the values found in the literature refer to STP conditions. Generally Density of fluid is not much change in slight change in Temperature. shows the density of water in various phases and temperature. Mass vs. the density of the object and the force of gravity. Example Favorite Answer. Why do things fall down when you throw them or drop them? The effect of ground elevation depends on the density of the ground (see Slab correction section). Gas density is change higher than liquid in raise temperature. gravity depends hugely on density and your distance from the planet. The acceleration due to gravity at the surface of the planet is equal to that at the surface of the earth. Why do you land on the ground when you jump up instead of floating off into space? Bandersnatch said: Gravity doesn't depend on mass only, but also on distance from the source. Technically it depends on the density of the fluid, but specific gravity is simply density / density of water, so they both contain the same information. 0 1. oliver_a2002. Jan 29, 2015 #20 DaveC426913. True, you get a SURFACE gravity that higher with a denser object but so what? Follow edited Feb 8 '20 at 20:24. answered Feb 6 '20 at 8:23. 1 decade ago. Erik Erik. Mass does not depend on gravity. Gravity is the gravitational pull that is invisible and cannot be touched or changed. Well yes, but actually no. Relevance. Density is how much matter is packed within an object, which can be changed. Mathematically, density is defined as mass divided by volume: = where ρ is the density, m is the mass, and V is the volume. If I travel to the moon, does my mass change? However, if the mass distribution is not spherical, the gravitational field does depend not only on the densities of the two mass distributions, but also on the geometrical shapes. 4 years ago. If the radius of the earth is R and the radius of the planet is R ′. Water has a density of 1 kg/l at 4°C. Density is defined as mass per unit volume. The density of a newly discovered planet is twice that of the earth. Does my weight change? I feel the gravitaional pull as compared to earth is much less and accordingly the weight behaves .--- more the specific gravity , the lose also more ,but there must be a ratio of weight lose as we have on earth weight in air and weight in water is specific io each metal or element . Gravity is the force by which a planet or other body draws objects toward its center. 8 Answers. Density is dependent on Temperature and Pressure. Density v. Specific Gravity . The … Matter curves spacetime, or does spacetime curve matter? Density. The two temperatures are specified by the notation (Ts/Tr) with Ts representing the temperature at which the sample's density has been determined and Tr the temperature at which the reference density is specified. Gravity is directly related to an objects mass. I have a question, probably me being stupid in my tiredness, but what is the relation to and object's density to its gravity if mass increases and volume stays the same? Then what is the value of R ′ R ? 1 decade ago. Although the two terms often are used interchangeably, there is a technical difference between specific gravity and density. What changes is the object's weight. Specific gravity for liquids is nearly always measured with respect to water at its densest (at 4 °C or 39.2 °F); for gases, the reference is air at room temperature (20 °C or 68 °F). 1 decade ago. What else does gravity do? Weight: a measure of gravity on an object. Does gravity depends on atmosphere ... With Uranus, its density is 4.3 times lower than Earth's while its radius is 4 times larger. Answer Save. The denser the object, the stronger the gravity, hence why a black hole may only be a mile wide, but it has a gravitational pull so strong that it wont even let light out. Accordingly, one is free to pick a reference point that makes for an easy explanation. Why? Improve this answer. When Temperature is increases Volume of fluids increases. 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