Calculating Net Force in Physics

This video tutorial explains how to calculate net force, which is the sum of all forces acting on an object. It begins with simple examples where forces cancel each other out, resulting in a net force of zero. The tutorial then progresses to more complex scenarios involving unequal opposing forces, demonstrating how to calculate the net force by subtracting smaller forces from larger ones. The video includes practice problems for viewers to try on their own, reinforcing the concepts taught. The tutorial concludes with a summary of key points and encourages viewers to apply the learned techniques.

What is net force?

• The sum of all forces acting on an object

• The force acting in the opposite direction

• The average of all forces

• The difference between two forces

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In the first example, why do the 5 Newton forces cancel out?

• They are perpendicular to each other

• They are in the same direction

• They are in opposite directions

• They are unequal forces

How do you calculate the net force when forces are in the same direction?

• Divide the larger force by the smaller force

• Subtract the smaller force from the larger force

• Add the forces together

• Multiply the forces

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What is the net force when 25 Newtons and 5 Newtons act in the same direction?

• 5 Newtons

• 25 Newtons

• 30 Newtons

• 20 Newtons

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In the example with four different forces, what is the net force of the top and bottom arrows?

• 20 Newtons

• 15 Newtons

• 5 Newtons

• 10 Newtons

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What is the net force of the left and right arrows in the four forces example?

• 10 Newtons

• 5 Newtons

• 15 Newtons

• 20 Newtons

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In the practice example, what is the net force when 3 Newtons and 2 Newtons act to the left?

• 2 Newtons

• 1 Newton

• 5 Newtons

• 3 Newtons

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What is the net force when 10 Newtons and 10 Newtons act from the right?

• 30 Newtons

• 20 Newtons

• 0 Newtons

• 10 Newtons

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In the final practice example, what happens to the forces when they are in opposite directions?

• They add up

• They cancel each other out

• They divide

• They multiply

What is the net force when forces are equal and opposite?

• Equal to the sum of the forces

• Zero

• Equal to the smaller force

• Equal to the larger force