Newton's second law allows us to find the greatest acceleration of the system is:
1) In the case of vertical moment, force cannot lift the box off the floor.
2) In the case of horizontal movement, the system with the highest acceleration is:
A. a 10 kg box lifted with 60 N of force
Newton's second law states that the net force on a body is proportional to its mass times the acceleration.
F = m a
where the bold indicates vectors, m is the mass and the acceleration of the body
In the attachment we have a scheme of the system for the two possible movements: vertical and horizontal.
Vertical movements.
F-W = ma
The weight of a body is the force with which the Earth attracts it.
W = m g
F - m g = ma
a = F / m - g
Let's apply this formula to each case:
A. box of mass 10 kg and applied force F = 60 N
a = 60/10 - 9.8
a = -3.8 m / s
B. Mass of the box 20 kg and the force 60N
C. Mass 20 kg and force 40N
D. Mass 10 kg and F = 40 N
We can see that in all cases the force is not enough to lift the box off the floor.
If we assume that the motion is horizontal, Newton's second law.
F = ma
a = F / m
We apply to each case:
A) m = 10 F = 60 N
a = 60/10
a = 6 m / s²
B) m = 20 kg and F = 60n
a = 60/20
a = 3 m / s²
C) m = 20 kg and F = 40 N
a = 40/20
a = 2 m / s²
D) m = 10 kg and F = 40 N
a = 40/10
4 m / s²
In the case of a horizontal movement if we have acceleration, ordered from highest to lowest corresponds to the cases.
A> D> B> C
In conclusion using Newton's second law we can find the greatest acceleration of the system is:
1) In the case of vertical moment, force cannot lift the box off the floor.
2) In the case of horizontal movement, the system with the highest acceleration is:
A. a 10 kg box lifted with 60 N of force.
Learn more here: brainly.com/question/20332763
