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                                    A vertical spring with force constant k is fixed on a table.A ball of mass m at a height h above the free upper end of the spring falls vertically on the spring,so that the spring is compressed by a distance d.What is the net work done in the process? | 
                            
| Answer» A vertical spring with force constant k is fixed on a table.A ball of mass m at a height h above the free upper end of the spring falls vertically on the spring,so that the spring is compressed by a distance d.What is the net work done in the process? | |