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Drop any object from a plane and the downward force due to the mass will eventually be matched by an upward force due to air resistance (terminal velocity). This terminal velocity depends on the objects drag coefficient, what the parachute does is present a drag coefficient sufficient to give the required terminal velocity for landing .
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You need no more than say 6 metres / second landing velocity, effectively this is the terminal velocity with the chute open.
Using body mass of 80 kg and acceleration due to gravity of 10 (m/s)/s,
this gives a downward force of ( 80 * 10 ) 800 newtons.
To balance this at landing velocity, you need a drag coefficient calculated from:
800 = velocity2 * drag coefficient , so:
drag coefficient = 800 / velocity2 = 22.22
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Compare this to the pre chute deployment velocity of around 80 metres / second, giving a drag coefficient of:
drag coefficient = 800 / 6400 = 0.125
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∙ 12y ago
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When you exert a force on an object it exert the?
opposite and equal force against you.
Do you exert more force when you are closer to the fulcrum?
do you exert more force when you are further from the fulcrum
What is The force that you exert on a lever called?
The force that you exert on a lever can be called the effort force. The lever has three parts. They are: the fulcrum, the load, and the effort force. This can also be classified as the input force. The force that you exert to perform a task is known as the input force.
What is the effort force you exert?
input force
When you pull on a window shade what do you exert?
You exert force when you pull on anything.
When you exert a force on an object it exert the?
opposite and equal force against you.
Do you exert more force when you are closer to the fulcrum?
do you exert more force when you are further from the fulcrum
If everything exerts a force why do you not get pulled by it?
The objects with bigger masses exert more pulling force. However, even though all the matter around us exert a force, their masses are too small for them to exert a 'feelable' force. But yes, they do exert a force, but its negligible.
What is The force that you exert on a lever called?
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What is the effort force you exert?
input force
What force do the sun and the moon exert on the earth?
They exert Gravitational Force on each other. It is a force which is directly proportional to Mass of the object
Suppose that you fall on a sidewalk while rollerblading Do you exert a force on the sidewalk Does the sidewalk exert a force on you Which of these forces may injure you?
Both, you exert a force onto the sidewalk, and the sidewalk "pushes back" with an equal, but opposite force.
When you pull on a window shade what do you exert?
You exert force when you pull on anything.
When you pull on a window shade you exert what?
You exert force when you pull on anything.
How much force does a floor exert on you?
When you stand on a floor, the force that you exert on the floor because of your weight is equal to the force with which the floor supports your weight.
What are the things that can or cannot exert force?
There is not anything that cannot exert some amount of force, even sunlight has a force though very minute.
3 ways simple machines make work easier?
Machines make work easier by: -Changing the amount of force you exert -Changing the distance in which you exert your force -Changing the direction in which you exert your force
