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If a particle is thrown horizontally at a speed of3 xx 10^8 ms^(-1)deduce the vertical fall in traveling 1 km distance. Given : g = 10 ms^(-2). Does that result depend upon the mass of the particle? Comment on your result, considering that Newton thought light is made up of corpusclesthat at a very large speed by the source. |
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Answer» Solution : If y be the vertical fall in time t, then `y = 1/2 "gt"^2 = 1/2 xx 10 ( (1)/( 3xx 10^5))^2 m = 5.5 xx 10^11 m` This result is INDEPENDENT of the mass of the particle. As it is clear from the above result, the downward DISTANCE covered by the CORPUSCLE is only `5.5 xx 10^(-11)`m for 103 m of horizontal distance covered by the corpuscle. So, we can neglect the effect of earth's gravitation and safely assume that the corpuscles TRAVELS along a straight line. |
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