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S. Coghlan Physics 12. S. Coghlan This concept map is designed to help you; Understand how the various different parts of forces and equilibrium link.

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Presentation on theme: "S. Coghlan Physics 12. S. Coghlan This concept map is designed to help you; Understand how the various different parts of forces and equilibrium link."— Presentation transcript:

1 S. Coghlan Physics 12

2 S. Coghlan This concept map is designed to help you; Understand how the various different parts of forces and equilibrium link together. Study the whole section of work. Main Concepts Linking words Printer friendly version available from my web site

3 Forces and Equilibrium Principal of moments  CM =  ACMTorque F x d Centre of massCentre of gravity Equilibrium may producehave involves show

4 Forces and Equilibrium Principal of moments involves Equilibrium show Torque F x d may produce Centre of mass Centre of gravity have

5 Centre of gravity rotational equilibrium typesconditions Forces and Equilibrium Principal of moments involves Equilibrium show Torque F x d may produce Centre of mass have  CM =  ACM  F V = 0  F H = 0  M = 0 StableNeutralUnstable

6 Centre of gravity Forces and Equilibrium Principal of moments involves Equilibrium show Torque F x d may produce Centre of mass have  CM =  ACM rotational equilibrium Stable Neutral Unstable types  F H = 0  F V = 0  M = 0 conditions

7 S. Coghlan Your own concept map Single page concept map

8 Principal of moments  CM =  ACMTorque F x d Centre of massCentre of gravity Equilibrium  CM =  ACM  F V = 0  F H = 0  M = 0 StableNeutralUnstable may produce involveshave show rotational equilibrium typesconditions strain You can use these Main Concepts and Linking Words to complete your own concept map. You can print out the next page and use it as a framework. Main Concepts Linking Words Printer friendly version available from my web site

9 Equilibrium Printer friendly version available from my web site

10 Centre of gravity Structures & Materials Principal of moments involves Equilibrium show Torque F x d may produce Centre of mass have  CM =  ACM rotational equilibrium Stable Neutral Unstable types  F H = 0  F V = 0  M = 0 conditions

11 Uniform object - geometrical centre. Gravitational field strength, g, is the same everywhere for the body. Centre of Mass = Centre of gravity Centre of Mass  Centre of gravity Object is so large that the gravitational field strength may not be the same everywhere over the body. 1 m

12 Force d d Lever d is always at right angles to the line of action of the force Torque Pivot Point Torque = F x d

13 If slightly pushed, and released; returns to its original position remains displaced continues to move and c of m lowers Stable equilibrium Neutral equilibrium Unstable equilibrium

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