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P8-Forces-1 - Coggle Diagram
P8-Forces-1
Gravity
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The weight of an object and the mass of an object are directly proportional- what symbol is used to mean directly proportional? What would happen to the mass if the weight doubled?
Resultant forces
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calculate the horizontal and vertical resultant forces 
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A boat moves through the sea. There is a 3000 N force to the west on the boat. There is a 1000 N force to the south on the boat. Determine the magnitude and direction of the resultant force on the boat. Draw a vector diagram of these forces to scale on Figure 2
Forces and elasticity
Required practical activity 18: investigate the relationship between force and extension for a spring
Method
how do you calculate force from the extension, and name the units?
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give examples of the forces involved in stretching, bending or compressing an object
describe the difference between elastic deformation and inelastic deformation caused by stretching forces
The extension of an elastic object, such as a spring, is directly proportional to the force applied, provided that the limit of proportionality is not exceeded.
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explain why, to change the shape of a stationary object (by stretching, bending or compressing), more than one force has to be applied
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