Gravity

There is gravity in space.

Consider it this way: If your rocket engines are

not burning and your ship is 'coasting', then you're essentially 'falling' toward

any mass that IS attracting you. And as you know from amusement park rides,

bungee jumps, and pool diving, when you're falling, you feel weightless.

Gravity is one of the four fundamental 'fields of force' that exist in the universe.

It is universally attractive and is proportional to the mass of the objects and inversely proportional to the square of the distance apart.

Yes, it does. Earth has a gravitational force equal to 9.8m/s2. In fact, anything that has mass has it's own gravitational force, though you certainly wouldn't be able to notice this occurring between yourself and other objects in your day-to-day life. This is because the force that your body exerts (or the force exerted by your cat, your car, a large ship, etc) is so small, you cannot perceive it.

For example, if you were sitting beside your cat, at a distance of 10 cm, and if you weighed 50kg and your cat weighed 5kg, the gravitational force between the two of you would be 0.0000016675N; You would be "accelerating" towards your cat at 3.33x10-8m/s2, and your cat would be "accelerating" towards yourself at 3.33x10-7m/s2. Since this force is so small, it would not be perceivable, and other forces (such as the downward force of gravity exerted on you and your cat by the Earth, the force of friction between yourself and whatever you are sitting on, and the force of friction between your cat and whatever your cat is sitting on) would likely be significantly stronger, thereby cancelling out the gravitational force between yourself and your cat.

Not at all. It depends up on Mass and the distance . Here Mass is constant . but distance is not .The distance between Earth and Sun is not always the same in an year.because of the elliptical orbit of the Earth.

Pollen and many other very small particles do not "overcome" the force of gravity; rather, their light weight and small size allow them to be carried by air currents.

Just as a kite flies in wind, these particles may be lifted upwards, also. Motes of dust, feathers, light seeds with filaments or "wings" attached and small pieces of paper may also be lifted by air or wind.

Dry Bulk Specific Gravity does not take into account for anything getting into the permeable or impermeable voids of say a stone by water for instance.

Saturated Surface Dry Bulk Specific Gravity takes into account for anything getting into the permeable voids only of say a stone by water.

Apparent Specific gravity takes into account for the volume of the impermeable voids and not anything getting into the permeable voids of say a stone by water.

Using W = mg and g = 9.8 m/s^2

m = 608N/(9.8m/s^2)

m = 62.04 kg

Neap tide

Weight, a commonly misunderstood term, is the force of gravity on a mass.

Mass is constant, but weight can vary depending on the gravitational field.

Gravity is a force that is exerted on an object by another object.

The formula for weight is:

G x m1 x m2 / r2

where G is the "gravitational constant",

m1 is the mass of one object and m2 is the mass of the other object.

The distance between the objects is r.

The gravity of a planet acts as if all the mass is at the center of the planet.

So, for an astronaut on the planet surface, r in the equation is the radius of the planet.

The weight of an astronaut is different on different planets because the masses of the planets and their diameters are different from the Earth, making the force of gravity stronger or weaker, thus altering the weight.

In fact the "surface gravity" on Mars and Mercury is almost exactly equal. That's because Mars has a bigger mass, but also a bigger diameter. In this case, these two factors cancel out almost exactly.

Incidentally, an astronaut couldn't actually stand on the surface of one of the "gas giant" planets because the "surfaces" are gas.

More details: the rotation speed of the planet affects the effective gravitational force you feel, because of centrifugal effects.

This is particularly important in the case of large fast spinning planets like Jupiter and Saturn.

no

A lorry does

moment of inertia is conserved.

Although it is impossible to apply to "weights" because the solid surface of Saturn is deep inside its total mass, the gravitic attraction by Saturn's mass is 95 times as great as Earth's. At the greater distance to the tops of its clouds, the gravity would be comparable to Earth's (within 10%), but this would only affect the thrust required by spacecraft. Any occupants would be weightless while in orbit.

The fulcrum is between the effort and the load.

The ship is box that is never symmetrical about its central axis as built

Also due to various drafts tythe waterplane in real differs from theoretical waterplane

Hence the 6 points drafts ,read at stem, midship and aft ,are first corrected to Length between perpendicuar , then list and trim , brionging the mean hydrostatic draft very close to tabular draft of designed ship

mere mean drafts could indicate higher submergence due to sag ( loaded heavy in middle ) or hog( loaded heavier in end holds)

mica has the specific gravity of 2.88

i think about 220 would be a good amount

cement

Either bring them closer together, or increase the mass of one or both of them... As in the case of the earth, and the moon - that would do it (and subsequently, kill us all)... Remember that we are about 4,000 miles from the center of the earth, standing on the ground at sea level... When you double that distance (from the earth's core center), you weight about 1/4 of what you did at sea level... And every doubling of your distance, will have the same net effect (1/4 the pull of gravity, at any point twice as far as the reference measurement)... (Jett Enterprises - Westlake, Ohio)

An inference is a conclusion or deduction reached based on evidence and reasoning rather than explicit information. It involves making an educated guess or assumption about something that is not directly stated.

standing start kilometre time for rock (air resistance ignored) is 14.28 seconds

veron top speed is 250 m/h = 112 m/s, so 1000/112 = 8.93 seconds

Gravity

No. Apples cannot bounce.