A person exerts 80,000 Pa of pressure on the ground while standing on both feet. What would happen to the pressure if the person then stood on only foot, decreasing the area in contact with the floor to half the original?
1. The person would exert twice as much pressure on the floor, 160,000 Pa. As the contact area between the surface and object decreases, the pressure increases.
2. The person would exert only slightly more than 80,000 Pa of pressure on the floor. The contact area between the surface and object has a very small effect on the pressure.
3. The person would exert the same amount of pressure on the floor, 80,000 Pa. Pressure only depends on the weight of the object, which didn’t change.
4. The person would exert half the amount of pressure on the floor, 40,000 Pa. As the contact area between the surface and object decreases, the pressure decreases.
I believe it is the third one. Is this correct?
it going to be the first one. 1. The person would exert twice as much pressure on the floor, 160,000 Pa. As the contact area between the surface and object decreases, the pressure increases.
nope, not the third one. The weight remained the same, but area= 1/2 original.
pressurenew= oldpressure/1/2
No, the correct answer is 1. The person would exert twice as much pressure on the floor, 160,000 Pa. As the contact area between the surface and object decreases, the pressure increases.
This is because pressure is defined as force divided by the area over which the force is applied. When the person stands on both feet, the force is distributed over a larger area, resulting in lower pressure. However, when the person stands on only one foot, the force is concentrated over a smaller area, resulting in higher pressure.
No, the correct answer is option 1: The person would exert twice as much pressure on the floor, 160,000 Pa. As the contact area between the surface and object decreases, the pressure increases.
To understand why, let's use the equation for pressure: pressure = force/area. In this case, the force being exerted by the person on the ground is the same (since their weight hasn't changed), but the area in contact with the ground is reduced to half.
When standing on both feet, the person's weight is distributed evenly across both feet, resulting in a larger area in contact with the ground. However, when standing on only one foot, the weight is concentrated on a smaller area. This means that the same amount of force is now applied over a smaller area, leading to an increase in pressure.
Therefore, the correct answer is that the person would exert twice as much pressure on the floor when standing on only one foot, 160,000 Pa.