Physics, 20.08.2019 15:50 unknown54321

How are weight and force related? explain using complete sentences.

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When we mean weight in general, we are implying the amount of human body material that we possess in us. That is 50 Kg etc.. But in physics weight means the force of gravity that the earth is exerting on a body, that possesses mass.

Any body or object that occupies space has a mass (amount of matter). This object is attracted towards the earth's center by a force called gravitational force. That is why an apple thrown high in to the sky returns back to the surface of earth. If possible it will travel to the center of Earth deep inside.

This force of attraction by the gravitational principles is called the weight. It is equal to mass multiplied with g = 9.81m/sec. on the surface of earth. A person with a mass 50 Kg is actually 490.5 Newtons heavy. This force is felt by us at the bottom of our feet.

When a Lift (elevator) goes up, we feel heavier or lighter during brief moments. This is because the Lift exerts some force in the upward direction or downward direction. That adds to or reduces the effect of gravity. More pronounced is the weightlessness or heaviness experienced when one goes on a giant wheel, roller coaster, water slide ...

So weight is a force. All the persons inside a satellite in distant space feel weightless. All the objects, floor, ceiling, tables, astronauts are moving at the same speed in the same direction in space around the Earth. So one person does not feel heavy under the feet on the floor. Truely speaking they have weight, but they do not feel it.

Weight is a force that depends on the mass (50 gms or 50 kgs or pounds) and the attraction of the planet on which we reside. If we go on to the Moon, the attraction we experience from the moon is only 1/6th of that on Earth. So we fell very light and our weight becomes 1/6th only. A high jumper may be able to jump over a bar placed at 6 times higher than on earth, if he gets the same lift he does on earth by pushing the ground with his/her feet.

Answer from: Quest

that tool is called an altimeter which measures your altitude which can be used to tell which atmosphere you are currently in, including the stratosphere.

hope this ! : )

Answer from: Quest

scattering of light by tiny particles in air to produce the colors we see on sky, is dependent on the following factors:

(i) wavelength of light

(ii) size of the scattering particle

(iii) distance traveled by light through the atmosphere.

according to rayleigh's law of scattering, the amount of scattering is inversely proportional to the fourth power of its wavelength. shorter the wavelength, greater is its scattering. hence violet/blue light is scattered more than red.

sun's light is a composite light ( visible light) with wavelengths in the range 400 nm (violet) to 700 nm (red). as sunlight passes through our atmosphere, the molecules of air scatter light according to their wavelengths. during sunrise and sunset, the sun's position is below the horizon. hence light from the sun travels a greater distance in the atmosphere when compared to its position a noon.

as sunlight enters the earth's atmosphere, blue light is scattered away and at the end of its journey in the sky, only red and orange wavelengths remain in the beam.

hence at sunrise and sunset, the sky appears reddish orange.

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How are weight and force related? explain using complete sentences....

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