The magnitude of the acceleration of gravity, in the international system of measurements, in an object that falls vertically is: a. 32.2 ft / s^2
b. 9.81 m / s
c. 32.2 m / s^2
d. 9.81 m / s^2

option D

Explanation:

the correct answer is option D

acceleration of a body under free fall due to the effect of gravity is the called acceleration due to gravity.

Acceleration due to gravity is a constant value.

According to the International System of Measurements the acceleration due to gravity is 9.81 m/s² when an object falls vertically.

acceleration due to gravity is denoted by 'g'.

weight of the box is given as

here this is placed on the inclined of angle 42 degree

now this weight will have two components one is along the incline other is perpendicular to it

so here we need to apply a force parallel to incline opposite to its component of weight

so here the component of weight is given as

here we have

so it requires 75 n force to move it upwards