The curve of the earth is so that you would fall and the earth would curve away putting you in a permanant state of freefall. This would give the illusion of zero gravity and you would weigh nothing.
In orbit, you would not exert any force on a scale since you are in free fall. This is because both you and the scale would be experiencing the same gravitational force, causing you to float weightlessly.
On earth, the force would be 116.845 pounds (rounded). That force is exactly equal and opposite to the person's weight. If the sum of the forces on the bottom of his feet were not zero, then he would be accelerating vertically.
A liquid with higher density will exert a greater buoyant force. This is because buoyant force is proportional to the density of the liquid displaced by the object.
The force the skateboard exerts on you would be equal and opposite to the force you exert on the skateboard, according to Newton's third law. Therefore, the skateboard would exert a force of 60N on you.
An object in orbit needs a centripetal force to keep it moving in a circular path. Gravity provides this centripetal force, pulling the object towards the center of the orbit. Without this force, the object would continue in a straight line tangent to the orbit.
In orbit, you would not exert any force on a scale since you are in free fall. This is because both you and the scale would be experiencing the same gravitational force, causing you to float weightlessly.
On earth, the force would be 116.845 pounds (rounded). That force is exactly equal and opposite to the person's weight. If the sum of the forces on the bottom of his feet were not zero, then he would be accelerating vertically.
Mass
The force would be the weight of the object.
The Earth exerts the greatest gravitational force on you because it is the most massive object you are closest to. The Earth exerts a force equal to your weight. The other objects exert gravitational forces but are not very noticeable because they are either low in mass or separated from you by great distance.
A liquid with higher density will exert a greater buoyant force. This is because buoyant force is proportional to the density of the liquid displaced by the object.
That would be "Gravity".
The force the skateboard exerts on you would be equal and opposite to the force you exert on the skateboard, according to Newton's third law. Therefore, the skateboard would exert a force of 60N on you.
An object in orbit needs a centripetal force to keep it moving in a circular path. Gravity provides this centripetal force, pulling the object towards the center of the orbit. Without this force, the object would continue in a straight line tangent to the orbit.
All of the fundamental types of force can be mathematically described in the form of force fields. But force involves many things. If I throw a ball, I exert force on that ball which is then accelerated as a result. The force field involved is far from obvious, although it does exist. If you understand the physics deeply, you would see that in order for me to exert a force on a ball, the electrons in the atoms in my hand have to exert a force of repulsion on the electrons in the atoms of the ball. And that electromagnetic force can be described as a force field.
Orbital mechanics are a direct result of the effect of gravitational force. Without gravitational force, no object would orbit any other - they all would follow their own independent straight line travel. Also, in reference to this question's inference that gravity pulls downward (i.e. towards the earth), remember that ALL objects, regardless of size, exert gravitational force. Obviously, the larger the object, the larger the gravitational force; and, the closer the object, the more force it exerts. So, in this case, remember that things near the Earth have at least three major gravitational forces acting on them: the Earth, the Moon, and the Sun. All three gravitational forces "pull" in different directions, and exert a different amount of force (based on the exact location of the orbiting object).
To calculate the force that a hydraulic cylinder can exert, you would need to know the hydraulic pressure being applied to the cylinder and the effective area of the piston inside the cylinder. The formula to calculate the force is force = pressure x area.