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The key here is that you're standing on levelground. You should recall the basic principle that net forces change motion. Since your motion is not changing relative to the earth (You're standing still), there must be no net force acting on you. In other words, all forces acting on you must cancel out. If you weigh 100 kilograms, then the downward force of gravity is equal to 980 Newtons in the downward direction. If the only other force acting on you is the normal force, then to cancel out the gravitational force, the normal force must be equal and opposite, or 980 Newtons in the upward direction.
What else can I help you with?
Does magnitude of normal force always equal the weight of the object?
No, not always directly opposite. The normal force is always perpendicular to the surface. So for a flat ground it will be directly opposite gravity or Weight.If you had an object on a ramp the normal force would be a diagonal line that is perpendicular with the ramp.
How much force a walking man exerts on the ground A A force greater than his weight B A force equal to his weight C A force less than his weight D A force not related to his weight?
B. A force equal to his weight. When a man is walking horizontally on a level surface, the force he applies to the ground is equal in magnitude to his weight in order to support his body and propel him forward.
When an object is pulling across a level surface at a constant velocity what force is the pulling force equal to?
When an object is moving across a level surface at a constant velocity, the pulling force is equal to the force of friction acting in the opposite direction. This force of friction is equal in magnitude and opposite in direction to the pulling force, resulting in a balanced situation where there is no acceleration.
When an object is pulled across a level surface at a constant velocity what force is the pulling force equal too?
The pulling force is equal to the force of friction acting in the opposite direction. At constant velocity, the force of friction is equal in magnitude but opposite in direction to the pulling force, resulting in a net force of zero and thus no acceleration.
What force pulls an aircraft toward the ground acts against the force of lift in level flight?
Gravity is the force that pulls an aircraft towards the ground, acting against the force of lift generated by the wings in level flight. Gravity pulls the aircraft downward, while lift generated by the wings counteracts this force to keep the aircraft aloft.
Does magnitude of normal force always equal the weight of the object?
No, not always directly opposite. The normal force is always perpendicular to the surface. So for a flat ground it will be directly opposite gravity or Weight.If you had an object on a ramp the normal force would be a diagonal line that is perpendicular with the ramp.
How much force a walking man exerts on the ground A A force greater than his weight B A force equal to his weight C A force less than his weight D A force not related to his weight?
B. A force equal to his weight. When a man is walking horizontally on a level surface, the force he applies to the ground is equal in magnitude to his weight in order to support his body and propel him forward.
What is difference between original ground level and normal ground level?
hi
How much lift does it take for an airplane to get off the ground?
In order to lift off the ground, the lift force (the upward force generated by the wings) has to be at least as great as the weight of the aircraft. Lift and weight are opposing forces and are equal in straight and level flight.
What is The relationship between weight and frictional force?
Weight is extremely useful in determining the frictional force on an object. Say we have a box on a level surface. The box has a weight of mg(mass times the gravitational constant). Since the box is still, and it is being supported by the ground, there is an equal and opposite force that is being exerted on the box by the ground, which pushes it up. This is known as the normal force. The force of Friction is defined as the greek letter mu(which is the coefficient of friction for the two materials against each other)times the normal force, which in this case is mg. Mu also varies depending on wether or not the box is moving in contact with the ground. A different coefficeint of friction is used instead of the one when the box is at rest. The frictional force on the object is always greater when the object is at rest than when it is sliding. Hope this helps!
When an object is pulling across a level surface at a constant velocity what force is the pulling force equal to?
When an object is moving across a level surface at a constant velocity, the pulling force is equal to the force of friction acting in the opposite direction. This force of friction is equal in magnitude and opposite in direction to the pulling force, resulting in a balanced situation where there is no acceleration.
When an object is pulled on a level surface at a constant velocity what force is the pulling force equal to?
If there is no friction or anything that can impede the movement off the object, then the force is zero. If there is friction, then the force is equal to that of the friction.
When an object is pulled across a level surface at a constant velocity what force is the pulling force equal too?
The pulling force is equal to the force of friction acting in the opposite direction. At constant velocity, the force of friction is equal in magnitude but opposite in direction to the pulling force, resulting in a net force of zero and thus no acceleration.
What force pulls an aircraft toward the ground acts against the force of lift in level flight?
Gravity is the force that pulls an aircraft towards the ground, acting against the force of lift generated by the wings in level flight. Gravity pulls the aircraft downward, while lift generated by the wings counteracts this force to keep the aircraft aloft.
Do force exist to object at rest?
There CAN be, as long as the force is being counterd by an equal and opposite force.
Name the forces acting on a plastic bucket containing water held above the ground level in your handdiscuss why the forces acting on the bucket do not bring change in its state of motion?
If it is held stationary, there will be the downward force of gravity, and the upward (normal) force from your hand. The reason that the bucket does not move is because the forces are equal and opposite.
When a plane is landing is it pointing downwards?
No, a plane will always under normal circumstances land 'straight and level', ie. in line/level with the ground.
