a boy and a girl are pulling a heavy crate at the same time with 7 units of force each what is the net force on the object is the object balanced or unbalanced​

Respuesta :

Answer:

Net force= 0N or 0units

Object is balanced

Explanation:

Net force refers to all the sum total of all forces acting upon an object. In this case, a boy and a girl are pulling a heavy crate at the same time with 7 units of force each.

- This means that the force exerted on the crate by the boy is F1 = 7units

- The force exerted on the crate by the girl is F2 = -7units

Hence, the Fnet = F1 + F2

Fnet = 7 + (-7)

Fnet = 0 units

An object which possess a net force is said to be unbalanced, while an object with no net force i.e 0 units or N. Hence, the heavy crate in this case being pulled by a net force of 0units is BALANCED.

The force applied on the object is a balanced force since the object is at equilibrium.

The given parameters;

force applied by the boy, F₁ = 7 N

force applied by the girl, F₂ = 7 N

The net force on the object is the resultant of the two equal both opposite directed force.

Let the boy's direction be positive

Let the girl's direction be negative

The resultant of the two forces is calculated as;

[tex]\Sigma F_x = F_1 + F_2\\\\\Sigma F_x = (7 \ N) + (-7 \ N)\\\\\Sigma F_x = 0[/tex]

Thus, the force applied on the object is a balanced force since the object is at equilibrium.

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