Answer:
b. Gravity is the weaker force; it is related to mass.
Explanation:
Gravity is the force of gravitational attraction of earth on all objects near its surface
This force on all objects depends on the mass of the objects
This force is given by
so here it is a weak force as it depends on mass and acceleration due to gravity while strong nuclear force is independent of mass and it only depends on the distance between the nuclei.
So as we will change the distance between the nuclei the force between them will change
So here correct answer is
b. Gravity is the weaker force; it is related to mass.
Answer:
F = 51.3°
Explanation:
The component of weight parallel to the inclined plane must be responsible for the rolling back motion of the car. Hence, the force required to be applied by the child must also be equal to that component of weight:
where,
W = Weight of Wagon = 150 N
θ = Angle of Inclinition = 20°
Therefore,
<u>F = 51.3°</u>