1 lesson Circular Centripetal force and the idea that Demonstration: The ball attached to Worksheets and End of Unit motion velocity changes but not speed. the meter. PowerPoint’s available Test on the S-drive. 1.5 Effect of Forces Time Topic Cur ref objectives Activities Resources Assessment Frame Go over the importance of balanced forces. Law experiment. 2 lessons Effects of 1.5a that a force may produce a change in Forces size and shape of a body. Plot This is a good opportunity to Worksheets and extension/load graphs and describe the reinforce graph drawing skills. associated experimental procedure. PowerPoint’s available Describe the ways in which a force may on the S-drive. change the motion of a body. Find the resultant of two or more forces acting along the same line recall and use the expression F = kx 6 lessons Forces 1.5 (b) Describe the moment of a force as a Experiments involving balancing a Video on the network – measure of its turning effect and give rule on a pivot with a variety of and Turning 1.5 (c) ‘Machines everyday examples describe, qualitatively, different weights should be used Moments’ effects 1.5 (d) the balancing of a beam about a pivot. here. Worksheets and Apply the idea of opposing moments to PowerPoint’s available simple systems in equilibrium. on the that, when there is no resultant force Centre of mass and no resultant turning effect, a system is A variety of shapes of lamina should in equilibrium be used in experiments to find the centre of mass. Standard shapes Perform and describe an experiment to (circle, square, etc.) can be used first determine the position of the centre of mass and then shapes for ‘non-standard’ of a plane lamina. Describe qualitatively the which the position of the centre of effect of the position of the centre of mass mass is not so obvious. Extension on the stability of simple objects students can be challenged with a
1 lesson Circular motion Centripetal force and the idea that velocity changes but not speed. Demonstration: The ball attached to the meter. Worksheets and PowerPoint’s available on the S-drive. End of Unit Test 1.5 Effect of Forces Time Frame Topic Cur ref objectives Activities Resources Assessment 2 lessons Effects of Forces 1.5a Go over the importance of balanced forces. that a force may produce a change in size and shape of a body. Plot extension/load graphs and describe the associated experimental procedure. Describe the ways in which a force may change the motion of a body. Find the resultant of two or more forces acting along the same line recall and use the expression F = kx Law experiment. This is a good opportunity to reinforce graph drawing skills. Worksheets and PowerPoint’s available on the S-drive. 6 lessons Forces – Turning effects 1.5 (b) 1.5 (c) 1.5 (d) Describe the moment of a force as a measure of its turning effect and give everyday examples describe, qualitatively, the balancing of a beam about a pivot. Apply the idea of opposing moments to simple systems in equilibrium. that, when there is no resultant force and no resultant turning effect, a system is in equilibrium Perform and describe an experiment to determine the position of the centre of mass of a plane lamina. Describe qualitatively the effect of the position of the centre of mass on the stability of simple objects Experiments involving balancing a rule on a pivot with a variety of different weights should be used here. Centre of mass A variety of shapes of lamina should be used in experiments to find the centre of mass. Standard shapes (circle, square, etc.) can be used first and then ‘non-standard’ shapes for which the position of the centre of mass is not so obvious. Extension students can be challenged with a Video on the network ‘Machines and Moments’ Worksheets and PowerPoint’s available on the
igcse%20y9%20physics%202013-14%20v2.docx