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Forces

Forces. Learning objectives: 1. To know the units forces are measured in. 2. To know what equipment is used to measure a force. 3. To be able to measure the force of objects in the classroom. What is a force?. Here are some ways of describing forces: A push A pull A stretch

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Forces

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  1. Forces Learning objectives: 1. To know the units forces are measured in. 2. To know what equipment is used to measure a force. 3. To be able to measure the force of objects in the classroom.

  2. What is a force? Here are some ways of describing forces: • A push • A pull • A stretch • A squeeze • A catch • A twist We can’t see forces but we can see the effects of a force.

  3. Forces can make things: • Speed up • Slow down • Change direction • Change shape

  4. Measuring forces • Forces are measured in newtons. • We can write this as N. • We use a Newton meter to measure forces. It is sometimes called a force meter.

  5. Have a look at the Newton meter: • What do you notice about this instrument that measures forces? • What objects would this instrument not be able to measure the force of and why?

  6. Today’s tasks: • You are going to complete worksheet 1. • You are going to work in groups and measure the force of different objects in the classroom using a Newton meter. You will record your findings in a table. We will then discuss our findings.

  7. What did we find out? • What object had the biggest force? • What object had the smallest force? • Challenge: can you find an object that has a force of exactly 3 N? • Which object has a force greater than 5 N?

  8. Quick quiz! • 1. What is a force? • 2. Can you see forces? • 3. Can you name any effects that forces have? • 4. What units do we measure forces in? • 5. What instrument do we use to measure force? • 6. What is this instrument also known as? How did you score??!

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