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A 70kg man wears shoes whose area is 0.02m2 each.How much pressure does he exert on the ground?
Wiki User
∙ 15y ago
The mass is 70 kg, and the gravity constant is 9.8 m/sec2, so the force on the earth is 70 x 9.8 Newtons = 686 Newtons. If both feet are on the ground the area of contact is 0.04 m2 , so the pressure is 686/0.04 = 17,150 Newton/m2. In the SI system, 1 Newton/m2 is called the Pascal
You can convert this to lbf/sq in if you want: 1 Newton = 0.2248 lbf, so 686 Newtons = 154.2 lbf, and 0.04 m2 = 62 sq ins, so pressure = 2.49 lbf/sq in.
Another conversion is to remember that 1 kilopascal (1000 pascals) = 0.1450 lbf/sq in
Wiki User
∙ 15y ago
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If you stand on one foot you increase the pressure you exert on the ground because?
you have decreased the area over which the force is applied, and pressure is force per unit area
How come a lighter object can exert more pressure towards the ground then a heavier object?
By distributing the weight over a smaller area.
What is the external pressure?
external pressure is pressure that other things exert on you
Do solids exert pressure?
yes
Which needles are made to exert more pressure?
Pressure exerted
If you stand on one foot you increase the pressure you exert on the ground because?
you have decreased the area over which the force is applied, and pressure is force per unit area
How does newtons third law of motion describe forces?
It shows that everything that happens will a reaction of equal force in the other direction. for example when you exert 20 pounds of pressure on the ground the ground will puch 20 of pressure back.
How come a lighter object can exert more pressure towards the ground then a heavier object?
By distributing the weight over a smaller area.
Which direction does a vapor material exert a pressure or force?
Vapor materials exert their pressure in just about every direction
What types of force that exert pressure?
athmospheric pressure
What is the external pressure?
external pressure is pressure that other things exert on you
Do solids exert pressure?
yes
What circumstance can exert pressure and why?
idek
Which needles are made to exert more pressure?
Pressure exerted
Why does falling and hitting the ground with your elbow exert more pressure than falling and hitting the ground with your back?
Because youre adding more weight to one side of your body closer to the ground, rather than your back which is flat
Why are you not crushed under atmospheric pressure?
The fluids in your body exert pressure and prevent the atmospheric pressure from closing in. Fluids exert pressure on a container the particles collide with each other and the sides of the container.
How do fluids exert exert pressure?
All of the forces exerted by the individual particles in a fluid combine to make up the pressure exerted by the fluid.
