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Gravity,contact force, friction, air resistance
Wiki User
∙ 11y ago
Wiki User
∙ 9y agoThere are several forces acting on a walking man. The most obvious is gravity. Other forces are the reaction force from the ground.
Wiki User
∙ 14y agoGravity pulls you down and an equal and opposite force of resistance from the ground hold you up.
Wiki User
∙ 14y agoweight force acting vertically downward & normal reaction force acting vertically upward
Wiki User
∙ 11y agogravity, air resistance and friction
Wiki User
∙ 7y agoI think it's the gravity.
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What is the reaction force of a man pushing a car?
Let's first imagine the man pushing on a car with the handbrake on. Obviously, the car does not move. The man is applying a force F (let us call it F1). The static friction of the brakes on the car are applying a force we shall call F2.Now, we know from Newton's laws that F = mass x acceleration (F = ma). The car is not accelerating, so F = 0. That is the net force of the man/car system is zero. So, F1 + F2 = 0, or if you prefer, F1 = -F2.In this case, the force of the man's feet on the ground cannot overcome the force of the brakes on the wheels. So the car does not move.Now, what happens if we release the handbrake? If enough force is applied to overcome the friction of the wheels and axles etc, the car will accelerate (a).The man's feet exert a force on the ground and the ground exerts an equal and opposite for on the man's feet. (Newton's 3rd law)The friction of the wheels exerts a force on the ground and the ground exerts an equal and opposite force on the wheels. (Newton's 3rd law)The man exerts a force on the car... and the car exerts an equal and opposite force on the man (3rd law)But, the force of the man's feet on the ground is greater than the opposing force of the wheel's friction on the ground. Therefore, there is a net force and the "man + car" system accelerates. Note that Newton's 3rd law applies to each pair of objects (car/ground), (car/man), (man/ground) seperately.
Why is the pressure on the ground more when a man is walking than when he is standingn?
when a man is standing on ground all his weight is in downward direction and pressure is the force divided by area as force is maximum and area is minimum so pressure will be more when he is standing
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?
A
What is the reaction force to a man pushing on a car?
it is a mechanical force , so the reactant force on the man is not just the reactive force bt also the frictional force
When is the pressure on the ground more when a man is lying or when a man is standing?
The person of mass (m) exerts the same force on the ground both standing up and lying down. This can be easily seen through Newtons Second Law ie F = ma. Knowing that pressure is defined as force over area (P = F/Area), it can be seen that the person standing up is applying more pressure to the ground.
What is the reaction force of a man pushing a car?
Let's first imagine the man pushing on a car with the handbrake on. Obviously, the car does not move. The man is applying a force F (let us call it F1). The static friction of the brakes on the car are applying a force we shall call F2.Now, we know from Newton's laws that F = mass x acceleration (F = ma). The car is not accelerating, so F = 0. That is the net force of the man/car system is zero. So, F1 + F2 = 0, or if you prefer, F1 = -F2.In this case, the force of the man's feet on the ground cannot overcome the force of the brakes on the wheels. So the car does not move.Now, what happens if we release the handbrake? If enough force is applied to overcome the friction of the wheels and axles etc, the car will accelerate (a).The man's feet exert a force on the ground and the ground exerts an equal and opposite for on the man's feet. (Newton's 3rd law)The friction of the wheels exerts a force on the ground and the ground exerts an equal and opposite force on the wheels. (Newton's 3rd law)The man exerts a force on the car... and the car exerts an equal and opposite force on the man (3rd law)But, the force of the man's feet on the ground is greater than the opposing force of the wheel's friction on the ground. Therefore, there is a net force and the "man + car" system accelerates. Note that Newton's 3rd law applies to each pair of objects (car/ground), (car/man), (man/ground) seperately.
Why is the pressure on ground match more when a man stand on the question the when he lies the lies on the?
When a man stands on the ground his weight (force) is spread over a small area, causing high pressure on the ground (pressure is force divided by area). When a man lies on the ground his same weight (force) is spread over a larger area, causing low pressure on the ground (pressure is force divided by area).
How does man walk?
When we walk on the ground our foot pushes the ground backward, and in return, the ground pushes our foot forward. The forward reaction exerted by the ground pushes our foot forward. The forward reaction exerted by the ground on our foot makes us walk forward.
In ww1 why were the british told to walk across no man's land?
The British were told to walk across no man's land during WW1 because of the rough ground. Walking was safer than running along the ground.
Why is the pressure on the ground more when a man is walking than when he is standingn?
when a man is standing on ground all his weight is in downward direction and pressure is the force divided by area as force is maximum and area is minimum so pressure will be more when he is standing
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?
A
When is the pressure on the ground more-when a man is lying or when a man is standing?
There is more pressure when the man is standing, since pressure is the amount of force acting on a certain area and is calculated by dividing the force by the area. When a man is standing, the area of contact with the ground is less than the area of contact when lying down. Since his weight is constant, there is more pressure when he is standing.
What can philosophy do for you?
it gives independence to the mind which enables man to be free.
Are there any walk through mega man star force 2?
try this webaite: http://www.gamefaqs.com/portable/ds/file/942813/53608
A person who cannot walk is called a?
a man who can not walk is a legless man or women
Is true that man walk on moon?
Yes that is very true man did walk on the moon
How many pages does Dead Man's Walk have?
Dead Man's Walk has 488 pages.
