Middle School Physical Science : Describe balanced and unbalanced forces
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Example Question #1 : Describe Balanced And Unbalanced Forces
Which of these two forces are balanced?
up and left
up and down
down and right
left and right
up and down
The answer is "up and down" because the forces in the upwards and downwards directions are equal and opposite.
Forces are acting on us and everything around us, at all times! Even when things are not moving, forces are still acting on them. These forces are said to be “balanced” meaning that they are equal and opposite, and have a net value of zero. When an object is in motion, it is being acted on by an “unbalanced” force.
The force of gravity is what holds us down on Earth. The normal force pushes back up against objects in the opposite direction of gravity and keeps things from getting crushed. These are balanced forces.
Example Question #2 : Describe Balanced And Unbalanced Forces
Which of these forces are unbalanced?
up and down
gravity and the normal force
left and right
none of these
left and right
The answer is "left and right." These forces are not balanced because while they are going in opposite directions, they are not equal.
Forces are acting on us and everything around us, at all times! Even when things are not moving, forces are still acting on them. These forces are said to be “balanced” meaning that they are equal and opposite, and have a net value of zero. When an object is in motion, it is being acted on by an “unbalanced” force.
The force of gravity is what holds us down on Earth. The normal force pushes back up against objects in the opposite direction of gravity and keeps things from getting crushed. These are balanced forces.
Example Question #3 : Describe Balanced And Unbalanced Forces
What is the name of the force labeled #3 acting in the downward direction?
gravity
an applied force
the normal force
an unbalanced force
gravity
The answer is "gravity."
Forces are acting on us and everything around us, at all times! Even when things are not moving, forces are still acting on them. These forces are said to be “balanced” meaning that they are equal and opposite, and have a net value of zero. When an object is in motion, it is being acted on by an “unbalanced” force.
The force of gravity is what holds us down on Earth. It acts in the downward direction, or perpendicular to Earth's surface regardless of the placement of the object. The normal force is the force of surfaces that pushes back up against objects in the opposite direction of gravity. Gravity and the normal force are balanced forces if an object is on a surface and not moving in the up or down direction. Forces applied in other directions are usually referred to as "applied forces."
Example Question #4 : Describe Balanced And Unbalanced Forces
What is the name of the force labeled #2, acting in the upwards direction?
an applied force
gravity
the normal force
an unbalanced force
the normal force
The answer is "The normal force."
Forces are acting on us and everything around us, at all times! Even when things are not moving, forces are still acting on them. These forces are said to be “balanced” meaning that they are equal and opposite, and have a net value of zero. When an object is in motion, it is being acted on by an “unbalanced” force.
The force of gravity is what holds us down on Earth. It acts in the downward direction, or perpendicular to Earth's surface regardless of the placement of the object. The normal force is the force of surfaces that pushes back up against objects in the opposite direction of gravity. Gravity and the normal force are balanced forces if an object is on a surface and not moving in the up or down direction. Forces applied in other directions are usually referred to as "applied forces."
Example Question #5 : Forces And Motion
Based on this image, what can you say about the motion of this object?
The object is moving left because the forces are balanced.
The object is moving right because the forces are balanced.
The object is moving left because the forces are unbalanced
The object is moving right because the forces are unbalanced
The object is moving right because the forces are unbalanced
The answer is "This object is moving right, because the left and right forces are unbalanced." The reason the object is moving right is because the stronger force of 2,356 N is acting in that direction.
Forces are acting on us and everything around us, at all times! Even when things are not moving, forces are still acting on them. These forces are said to be “balanced” meaning that they are equal and opposite, and have a net value of zero. When an object is in motion, it is being acted on by an “unbalanced” force.
The force of gravity is what holds us down on Earth. It acts in the downward direction, or perpendicular to Earth's surface regardless of the placement of the object. The normal force is the force of surfaces that pushes back up against objects in the opposite direction of gravity. Gravity and the normal force are balanced forces if an object is on a surface and not moving in the up or down direction. Forces applied in other directions are usually referred to as "applied forces."
Example Question #5 : Describe Balanced And Unbalanced Forces
Balanced forces are:
equal and going in the same direction
equal and opposite
unequal and opposite
unequal and going in the same direction
equal and opposite
The answer is "equal and opposite."
Forces are acting on us and everything around us, at all times! Even when things are not moving, forces are still acting on them. These forces are said to be “balanced” meaning that they are equal and opposite, and have a net value of zero. When an object is in motion, it is being acted on by an “unbalanced” force.
The force of gravity is what holds us down on Earth. It acts in the downward direction, or perpendicular to Earth's surface regardless of the placement of the object. The normal force is the force of surfaces that pushes back up against objects in the opposite direction of gravity. Gravity and the normal force are balanced forces if an object is on a surface and not moving in the up or down direction. Forces applied in other directions are usually referred to as "applied forces."
Example Question #6 : Describe Balanced And Unbalanced Forces
Which of these statements is true?
Forces are acting on everything at all times.
Objects that are not moving are being acted upon by balanced forces.
all of these
Objects that are moving are being acted upon by unbalanced forces.
all of these
The answer is "all of these."
Forces are acting on us and everything around us, at all times! Even when things are not moving, forces are still acting on them. These forces are said to be “balanced” meaning that they are equal and opposite, and have a net value of zero. When an object is in motion, it is being acted on by an “unbalanced” force.
The force of gravity is what holds us down on Earth. It acts in the downward direction, or perpendicular to Earth's surface regardless of the placement of the object. The normal force is the force of surfaces that pushes back up against objects in the opposite direction of gravity. Gravity and the normal force are balanced forces if an object is on a surface and not moving in the up or down direction. Forces applied in other directions are usually referred to as "applied forces."
Example Question #7 : Describe Balanced And Unbalanced Forces
Unbalanced forces:
all of these
can be applied forces
are unequal
make objects move
all of these
The answer is "all of these."
Forces are acting on us and everything around us, at all times! Even when things are not moving, forces are still acting on them. These forces are said to be “balanced” meaning that they are equal and opposite, and have a net value of zero. When an object is in motion, it is being acted on by an “unbalanced” force.
The force of gravity is what holds us down on Earth. It acts in the downward direction, or perpendicular to Earth's surface regardless of the placement of the object. The normal force is the force of surfaces that pushes back up against objects in the opposite direction of gravity. Gravity and the normal force are balanced forces if an object is on a surface and not moving in the up or down direction. Forces applied in other directions are usually referred to as "applied forces."
Example Question #8 : Describe Balanced And Unbalanced Forces
Assuming gravity is equal to the normal force, and the men are all pushing the boxes with equal force in newtons, which of these images shows balanced forces?
none of the images
the image on the right
the image on the left
both of the images
the image on the right
The answer is "the image on the right" because the two men are pushing in equal and opposite directions.
Forces are acting on us and everything around us, at all times! Even when things are not moving, forces are still acting on them. These forces are said to be “balanced” meaning that they are equal and opposite, and have a net value of zero. When an object is in motion, it is being acted on by an “unbalanced” force.
The force of gravity is what holds us down on Earth. It acts in the downward direction, or perpendicular to Earth's surface regardless of the placement of the object. The normal force is the force of surfaces that pushes back up against objects in the opposite direction of gravity. Gravity and the normal force are balanced forces if an object is on a surface and not moving in the up or down direction. Forces applied in other directions are usually referred to as "applied forces."
Example Question #10 : Forces And Motion
Assuming that gravity is equal to the normal force, which of these images shows unbalanced forces?
the image on the left only
the image on the right only
neither of these
the image on the left and possibly the image on the right, but it depends on how hard each of the men are pushing.
the image on the left and possibly the image on the right, but it depends on how hard each of the men are pushing.
The answer is "the image on the left and possibly the image on the right, but it depends on how hard each of the men are pushing." The image on the left shows unbalanced forces pushing in the leftward direction. The image on the right could be showing unbalanced forces if one of the men is pushing with a stronger force.
Forces are acting on us and everything around us, at all times! Even when things are not moving, forces are still acting on them. These forces are said to be “balanced” meaning that they are equal and opposite, and have a net value of zero. When an object is in motion, it is being acted on by an “unbalanced” force.
The force of gravity is what holds us down on Earth. It acts in the downward direction, or perpendicular to Earth's surface regardless of the placement of the object. The normal force is the force of surfaces that pushes back up against objects in the opposite direction of gravity. Gravity and the normal force are balanced forces if an object is on a surface and not moving in the up or down direction. Forces applied in other directions are usually referred to as "applied forces."
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