Forces in a System

Forces in a System

Activity 7

This is an example of a system. What are the parts of this system?

• ring/washer

• 2 pieces of string

• hands of people holding the string

Multiple Choice

Before I attached the strings to the washer, did these parts make up a system?

What is the difference between a system and something that is not a system?

Is each person pulling on a string?

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How do you know?

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What do you think is the reason the washer is not moving?

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What happens if an object like the washer is pulled with equal force in opposite directions?

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Now what happened?

• Why did the ring move?

• In which direction did the ring move?

• So which person pulled with the greater force?

What causes an object to move?

what have we found out about forces when there is no movement of an object?

Open Ended

Think about what we just did with the strings and a washer. What do we know about the forces in a tug of war when students are pulling on the rope and the rope is not moving?

Open Ended

What is happening when the rope moves in the direction of a particular team?

Open Ended

How can the tug of war be related to what we know about a system?

Open Ended

What are the parts of the tug of war system?

Open Ended

Think about a school system. What related parts are in a school system?

Open Ended

List some other systems.

Go back to Google Classroom and find your Science Lab Reinforcement assignment.

Good luck and Good work!