Answer:
The net force acting on that object must be 0
Explanation:
According to Newton's first law of motion, if there's no force acting on an object (or the net force is 0), that object will stay at the same speed. That object acceleration must also be 0.
Answer:
The pressure will be increased
Explanation:
As you move toward the interior of the earth the pressure is going to increase, which will support the column of earth above the person who moves towards the interior.
This column can be calculated by means of the following expression
P = d*g*h
where:
d = density of the earth [ kg/m^3]
g = gravity = 9.81 [m/s^2]
h = column of earth [m]
As we can see the pressure depends on the height or depth as we move into the earth, as well as the density of the Earth.
It appears to be a <span>spiral shape. </span>
We know that the formula for static friction is:
Fs = μ N
where,
μ is the coefficient of static friction = 0.180
N is the normal force = weight of the cup = m g
We also know that from the Newton’s second law of motion,
the formula for net force is:
Fnet = m a
where m is the mass of the cup and a is the acceleration
of the cup
To prevent the cup from sliding backward, the static
friction Fs must cancel out the net Force Fnet, that is:
Fnet – Fs = 0
Therefore:
m a – μ N = 0
m a = μ N
m a = μ (m g)
Cancelling m:
a = μ g
a = 0.180 (9.81 m / s^2)
a = 1.7658 m / s^2
Therefore the plane can only have an acceleration of
about 1.77 m/s^2 before the cup starts to slide.