Investigate how balanced forces affect an object's motion - 3rd Grade Science

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Question

Does this photo show unbalanced or balanced forces? Explain why.

Tug Of War, Force, Teamwork, Men, Rope

Answer

This photo represents a balanced force because each side has an equal number of participants, and they are of similar size. It appears that they are both pulling equally, and they have the same strength. If both sides pull with an equal amount of force, then neither team will move, and it will be a tie.

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Question

What does the term balanced forces mean? Example: James and Noora were both pulling on a tug toy with their dog, and because of balanced forces, neither side was able to move the other!

Answer

Balanced forces are two forces acting in opposite directions on an object, and equal in size. In the example, James and Noora have the same force or strength as their dog, so neither side can pull the toy away from the other. If one party were stronger than the other, there would be an unbalanced force, and the stronger team would be able to take the toy away from the weaker side.

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Question

Which direction would this object move with balanced forces working on it?

Screen shot 2020 06 16 at 10.45.56 am

Answer

This object would not move because it has balanced forces working in it. When balanced forces are applied to opposite sides of an object, the object remains motionless. A stronger force needs to be applied to one side for the object to move. Balanced forces mean the power or strength applies to each side is equal.

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Question

This graphic represents a balanced force.

Screen shot 2020 06 16 at 10.51.38 am

Answer

The graphic provided does not represent a balanced force. A balanced force means equal forces are being applied to each side of an object. The arrows would need to be equivalent to represent a balanced force. There is more force being applied in one direction than the other, so the object will move in with force.

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Question

What is the effect of a balanced force on a stationary object's motion?

Answer

A balanced force means that equal force is being applied to an object on opposite sides. If equal force is being applied, there will be no change in the motion of the object; it will remain stationary. A greater force needs to be applied to one side for movement to take place.

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Question

The groups of people in this photo are both pulling on a rope. Which group will win the tug-of-war game?

Tug Of War, Force, Teamwork, Men, Rope

Answer

This photo represents a balanced force because each side has an equal number of participants, and they are of similar size. It appears that they are both pulling equally, and they have the same strength. If both sides pull with an equal amount of force, then neither team will move, and it will be a tie. In this graphic, neither team will win.

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Question

What does this photo represent in terms of forces?

Screen shot 2020 06 16 at 10.45.56 am

Answer

This photo represents balanced forces. When balanced forces are applied to opposite sides of an object, the object remains motionless. A stronger force needs to be applied to one side for the object to move. Balanced forces mean the power or strength applies to each side is equal.

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Question

How do equal forces on an object affect an object's motion?

Answer

Equal forces are two forces acting in opposite directions on an object, same in strength, and equal in size. If one party is stronger than the other, there would be an unbalanced force. An object will not move if balanced forces are applied to it.

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Question

Which scenario represents an example of balanced forces affecting an object's motion?

Answer

When balanced forces are applied to opposite sides of an object, the object remains motionless. The example "My two Boston Terrier puppies tug on either side of a stuffed toy all day long!" demonstrates two dogs that are of similar strength and size pulling on opposite sides of the toy. These dogs are applying the same power and force on both sides of the toy, and neither can pull the toy away from the other.

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Question

This graphic represents an unbalanced force.

Illustration of Balanced Forces at work

Answer

This image represents balanced forces. Each person is pushing in opposite directions with equal strength and power. The box will not move because there are balanced, equal forces on both sides.

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