Solution 3.9a - Mechanics

-                      Part 1
                       
                        What is a force? 
                        Force and gravity 
                        Other forces 
                        Forces and vectors
                      
                    
                      Part 2
                       
                        Forces and equilibrium 
                        Kinematics 
                        Position Vectors 
                        Constant acceleration
                      
                    
                      Part 3
                       
                        Newton’s first law 
                        Newton’s second law 
                        Newton’s third law 
                        Mathematical modelling
                      
                    
                      Practice tests
                       
                        Practice Test Paper 1 
                        Solution to Test Paper 1 
                        Practice Test Paper 2 
                        Solution to Test Paper 2 
                        Practice Test Paper 3 
                        Solution to Test Paper 3
                      
                    
                      Part 4
                       
                        Moments 
                        Equilibrium 
                        Momentum and impulse 
                        Conservation of momentum
                      
                    
                      Part 5
                       
                        Conservation of energy 
                        Variable acceleration I 
                        Variable acceleration II 
                        Circular Motion
                      
                    
                    
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			Solution 3.9a
			
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 R−mg=0R=2009.8=1960 N

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