You are walking up an icy slope. suddenly your feet slip, and you start to slide backward. will you slide at a constant speed, o
r will you accelerate?
2 answers:
Answer:
Will accelerate with g.sinθ, where θ is the angle between the ground and the inclination of the slope.
Explanation:
When any mass is sliding down the inclined plane will be affected by the acceleration due to gravity and some component of this acceleration will act on the body.
Let θ be the angle of inclination of the inclined slope from the horizontal.
then from the attached figure we can clearly get the component of acceleration along the slope.
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Answer:
Explanation:
We can solve this with the Law of Universal Gravitation and knowing the acceleration due gravity of an object above the surface of the planet decreases with the distance (height) of this object from the center of the planet.
Well, according to the law of universal gravitation:
(1)
Where:
is the module of the force exerted between both bodies
is the gravitational constant
is the mass of the Earth
are the mass of each communications satellite
is the distance between the center of the Earth and the satellite
is the radius of the Earth
is the height of the satellite, measured from the Earth's surface
On the other hand, we know according to <u>Newton's 2nd law of motion:</u>
(2)
Combining (1) and (2):
(3)
Isolating :
(4)
Remembering :
(5)
Finally: