Used an app called Mephyso to do the calculation.
A man with 60 years to live wants to visit a distant Galaxy which is 160,000 light years away. What must be his constant speed?
1 answer:
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Answer:
A) F_g = 4.05 10⁻⁴⁷ N, B) F_e = 9.2 10⁻⁸N, C) = 2.3 10³⁹
Explanation:
A) It is asked to find the force of attraction due to the masses of the particles
Let's use the law of universal attraction
F =
let's calculate
F =
F_g = 4.05 10⁻⁴⁷ N
B) in this part it is asked to calculate the electric force
Let's use Coulomb's law
F =
let's calculate
F =
F_e = 9.2 10⁻⁸N
C) It is asked to find the relationship between these forces
= 2.3 10³⁹
therefore the electric force is much greater than the gravitational force
Answer:
X component of force is 60.62 N.
Y component of force is 35 N.
Force of gravity on the dog is 245 N.
Magnitude of normal force is 210 N.
Explanation:
Given:
Force of pull is,
Mass of the dog is,
Angle of inclination is, °
Acceleration due to gravity is,
The free body diagram of the dog is shown below.
The X and Y components of force of pull is given as:
Therefore, the X and Y components of the force are 60.62 N and 35 N respectively.
Force of gravity on the dog is the product of its mass and acceleration due to gravity. Thus,
Therefore, the force of gravity on the dog is 245 N.
Now, consider the motion in the vertical direction of the dog. As there is no motion in the vertical direction, the net force along the Y direction is 0. In other words, the total Upward force is equal to the total downward force.
From the free body diagram,
Therefore, the normal force acting on the dog is 210 N.
