Write two differences between balanced and unbalanced forces. Two forces of 35N and 15N are acting in opposite directions on a body. Calculate the net force. State whether it is balanced or unbalanced.
Answers
Answer:
If two individual forces are of equal magnitude and opposite direction, then the forces are said to be balanced. An object is said to be acted upon by an unbalanced force only when there is an individual force that is not being balanced by a force of equal magnitude and in the opposite direction.
Answer:
- Unbalanced forces change the state of motion of an object, whereas balanced forces do not.
- In the case of unbalanced forces acting on an object, the resultant of all the forces acting on a body isn't zero, whereas in the case of balanced forces acting on an object, the resultant of all the forces acting on a body is zero.
The net force acting on the body is equal to the sum of all forces acting on the body.
Two forces of 35 N and 15 N are acting in opposite directions on the body.
Taking the direction in which the force of 35 N is acting as positive and the direction in which the force of 15 N is acting as negative,
we have the sum of all forces = 35 N + (-15 N)
= 20 N.
From this we can see that the object moves in the direction in which the 35 N force is being applied.
Taking the direction in which the 35 N force is acting as negative and the direction in which the 15 N force is acting as positive will not affect the answer, and give the same conclusions.
The forces acting on the body are unbalanced as the resultant of all the forces is not zero.