Work and Simple Machines

Grade 1045 min

Learning Objective

I can analyze how simple machines reduce the force required to perform work by increasing the distance over which the force is applied.

Lesson Flow

Watch Video

6 min

Simple Machines

Bozeman Science

Practice

14 min

9 questions β€’ Short answer

Exit Ticket

5 min

β€œA person uses a ramp to push a 50 N box up to a height of 1 meter. If the person only needs to apply a force of 25 N to push the box up the ramp, how far must the person push the box along the ramp's surface? A lever allows a person to lift a heavy rock with only 100 N of force. If without the lever, the rock would require 400 N of force to lift, how does the distance over which the 100 N force is applied compare to the distance the rock is lifted?”

Teacher Guide

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  • Answer keys for all questions
  • Differentiation strategies
  • Extension activities
  • Printable student handouts