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A man whose mass is 80 kg on the earth's surface is in a spacecraft at a height of 2 earth radii above the earth's surface His weight there is?
20kg
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Another contributor jumped in:
The man's mass doesn't change. He carries 50 kg with him wherever he goes.
But his weight changes, depending on the acceleration of gravity where he is.
Weight = (mass) times (acceleration of gravity).
So we need to find the acceleration of gravity at 2 radii above the surface.
The acceleration of gravity is proportional to the square of the distance from the
place to the center of the earth, and on the surface, it's 9.8 m/s2 .
On the surface, you're 1 radius from the center. At 2 radii from the surface, you're
2 more radii from the center, or 3 radii all together. So your distance from the center
has tripled.
The acceleration of gravity is 1/32 of its original value, or 1/9th of 9.8 .
9.8/9 = 1.089 m/s2 at that position in space.
The man's weight is (mass) times (acceleration of gravity).
On the surface, he weighs (50 x 9.8) = 490 newtons (110.2 pounds).
Out there at 3 radii from the center, he weighs (50 x 1.089) = 54.4 newtons (12.25 pounds).
What else can I help you with?
How do you calculate body surface area?
BSA = 0.007184 x Weight (kg)^0.425 x Height (cm)^0.725
What is the weight ratio for height?
There is no weight ratio for height. The weight of an object depends on its the volume and density. The volume depends on the height as well as the average cross section so height, alone, cannot determine weight.
What is the analogy for height weight and inches?
It is pounds. An inch is the measuring unit for height. A pound is the measuring unit for weight. The logic is as follows. height, weight -> (measuring unit for height), (measuring unit for weight) Some similar examples, If it were "height, distance and inches." the missing word would be "miles" If it were "height, age and inches." the missing word would be "years"
What are 2 equations for GPE?
Weight*Height Mass*9.8*Height \
What is the force of weight of 100 kg man in earths gravity of 9.8?
Weight = mg (mass x gravity).
The radius of the earth is about 6370 km A 7420 N spacecraft travels away from earth What is the weight of the spacecraft at a height 6370 km above Earth's surface?
10bls
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The weight of any object on the surface of the moon is 16.55% of its weight on the surface of the Earth.
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What is the relationship between specific weight and pressure?
Pressure varies with height as a function of specific weight. p=p0+specific weight*height Where height is the distance below the reference pressure p0 (usually at a free surface).
What is potential energy dependent upon an objects weight and distance from earths surface?
Gravitational potential energy.
What is the body surface area for a child weighing 7.5 pounds?
You need both height and weight to calculate body surface area.
At what height from the earth the weight of an object become half of the weight on earth?
The weight of an object becomes half at a height where the gravitational force is half of the force on Earth, about 3,578 km above Earth's surface. At this height, the object and Earth are attracted with equal and opposite force.
What are the two factors that determine gravitational potential energy?
The two variables that determine gravitational potential energy are height above earths surface mass (also air resistance may come into play but in physics friction and air resistance are usually ignored and)
Why do spacecrafts lose their large fuel tanks and booster rockets once they have left the earth's surface?
Spacecraft discard their fuel tanks and booster rockets once they have left Earth's surface to reduce weight and improve efficiency. Once the fuel in the tanks is consumed and the booster rockets have propelled the spacecraft into orbit, they are no longer needed and would only add unnecessary weight and drag. By discarding them, the spacecraft can operate more efficiently and maneuver in space more easily.
How does isostasy impact the surface of the earth?
Isostacy refers to an equilibrium level maintained by the earths crust on top of the mantle. The theory holds that the weight of the earths crust will displace a certain amount of the underlying mantle, and that an equilibrium is reached whereby the mass of the displaced crust and the mass of the displaced mantle are equal, thus holding that part of the crust at a certain height.
What is the type of potential energy dependent upon an object's weight and distance from earths surface?
The type of potential energy dependent upon an object's weight and distance from Earth's surface is gravitational potential energy. It is given by the formula: PE = mgh, where m is the mass of the object, g is the acceleration due to gravity, and h is the height of the object above the reference point.
Air weight that varies over earths surface is called?
Atmospheric pressure varies over Earth's surface, mainly due to differences in temperature, altitude, and weather conditions. This variation in air pressure creates different weight of air known as atmospheric weight.
