![]() ![]() Newton started beginning of physics by defining new terms, but the beginning must not be regarded end. Application/Improvements: The credit of discovery of F =ma must not be given to Newton. 136 years after publication of the principia. The concept of units and dimensions was initiated by Fourier in 1822 i.e. Further law of gravitation was given in nearly 12 propositions and was not pointed as product of masses of bodies. ![]() More over laws are based on scientific logic not on traditions. F=ma can never be derived from circular motion as it describes linear motion. Before Newton' time, tradition of representing change in velocity by length of segment is never justified. If Proposition 1, Proposition VI and Proposition LXVI are critically analyzed, then F = ma does not follow from them in any way. F = (v-u) is not taught and mentioned anywhere, however Euler's F=ma is regarded as Newton's second law of motion. difference, is regarded as 'rate of change of '. In the existing literature, motion is regarded as 'quantity of motion' (amount or quantum or magnitude of motion). ![]() Findings: The Principia's second law at pages 19-20 states as– the alteration in motion is proportional to force i.e. Newton separated physics from natural science. Descartes laws preceded Newton's laws these aspects need to be taken in account. Conceptually, in Newton's time, neither acceleration nor second derivative was employed, so it was impossible for him to write F =ma. Newton did not give any equation in the Principia for second, third laws motion and law of gravitation. Methods/Statistical analysis: The discussion partially deals with history of science so various aspects are quoted from original references. It is debated here with scientific logic. But it was given by Euler in 1775, forty-eight years after the death of Newton. Objective: F =ma is taught as Newton's second law of motion all over the world. ![]()
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