Lessons and Tools for Teachers

#### Lessons for Force

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• If You Force It, It Will Move - … direction of motion and effects of gravitational force (weight) and frictional forces. 17 If You Force It, It Will Move Grade Nine Attachment … Y Forces Effect of student's force is negligible. Effect of gravitational force causes acceleration down. Not applicable Effect of student's force initiates … Y Forces Effect of student's force is negligible. Effect of gravitational force causes acceleration down. Not applicable Effect of student's force initiates …
• Can You Bear It? Pulleys, Gears, Forces, Structures, and Mechanisms - … pulley, two pulleys, etc., and measure effort force qualitatively by comparison (easier, harder, more force, less force, seemed heavier, lighter). Grade 5 students … actually calculated using the formula: load (or force produced by the pulley) / effort force (or force applied to the pulley as measured by … (or force produced by the pulley) / effort force (or force applied to the pulley as measured by the spring scale [force meter]). Force is measured …
• May the Force Move - You Forces Acting on Structures & Mechanisms; Motion - … fixed pulley reduces the amount of force required. A movable pulley reduces the force by half. Forces can be measured. g) Students brainstorm … at 6:43:23 AM Focus - Forces - 5 May The Force Move You Subtask 8.5 Forces Acting on Structures & Mechanisms; Motion A … at 6:43:23 AM Focus - Forces - 5 May The Force Move You Subtask 8.5 Forces Acting on Structures & Mechanisms; Motion A … AM Apply - A Quick Quiz about Forces - 5 Subtask 9.5 May The Force Move You Forces Acting on Structures & Mechanisms; Motion A …
• Structure and Mechanism - … . Mechanical Advantage can then be calculated: load force / effort force (load force = output force and effort force = input force). 4. Mechanical Efficiency = (mechanical advantage / velocity ratio … have a fulcrum (pivot point), load force (the force exerted by the load), and effort force (the force required to move the load) Effort … effort force equals the load force. B) the effort force is greater than the load force. C) the effort force is less than the load force