We can draw arrows to show the forces acting on an object. The length of an arrow indicates the size of the force. Its direction indicates the direction of the force.Two forces act on the soccer ball on the right:The Earth's gravity pulls it down.The person's hand pushes it up. This is called an applied force – a force exerted on the object by a person, animal or machine. (If you doubt this force exists, try holding a soccer ball like this for an hour!)The ball is motionless and is not accelerating, so the two forces must be equal and opposite.Another way of showing the forces acting on an object is to draw a free body diagram. A square represents the object, and arrows pointing out from the square represent the forces acting on it.These diagrams make it easy to calculate the net force. In the example, the arrows are equal in length but point in opposite directions. These forces are balanced, so the net force is zero.Question 1SavedLook at the free body diagram for the soccer ball above. Explain how you can tell that the net force on the ball is zero.
Question
We can draw arrows to show the forces acting on an object. The length of an arrow indicates the size of the force. Its direction indicates the direction of the force.Two forces act on the soccer ball on the right:The Earth's gravity pulls it down.The person's hand pushes it up. This is called an applied force – a force exerted on the object by a person, animal or machine. (If you doubt this force exists, try holding a soccer ball like this for an hour!)The ball is motionless and is not accelerating, so the two forces must be equal and opposite.Another way of showing the forces acting on an object is to draw a free body diagram. A square represents the object, and arrows pointing out from the square represent the forces acting on it.These diagrams make it easy to calculate the net force. In the example, the arrows are equal in length but point in opposite directions. These forces are balanced, so the net force is zero.Question 1SavedLook at the free body diagram for the soccer ball above. Explain how you can tell that the net force on the ball is zero.
Solution
To determine that the net force on the soccer ball is zero by looking at the free body diagram, follow these steps:
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Identify the Forces: Observe the arrows representing the forces acting on the soccer ball. In this case, there are two arrows: one pointing downwards (gravity) and one pointing upwards (applied force from the person's hand).
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Compare the Lengths of the Arrows: The length of each arrow indicates the magnitude of the force. In the diagram, the arrows are of equal length, which means the magnitudes of the forces are equal.
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Check the Directions: The direction of the arrows shows the direction of the forces. One arrow points downwards, and the other points upwards, indicating that the forces are acting in opposite directions.
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Determine the Net Force: Since the forces are equal in magnitude and opposite in direction, they cancel each other out. This means the net force is the sum of the forces, which in this case is zero.
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Conclusion: Because the forces are balanced (equal in magnitude and opposite in direction), the net force on the soccer ball is zero. This is why the ball remains motionless and is not accelerating.
Similar Questions
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Look at the free body diagram for the soccer ball above. Explain how you c
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