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决定推铅球速度的主要因素是推球出手的初速度、出手角度、出手点高度。关于出手角度,我国教科书上一种是认为40°～44°,一种认为,实际上应为38°～42°近些年来世界级铅球运动员推球的出手角度大都小于上述角度,称之为低角度推球。一、理论上的最佳出手角度推铅球属于比赛远度的项目。1 978年全国体育系《田径》通用教材,首次提出计算出手角度的公式,是45°-β/2(β即地斜角)。最近笔者专门请教了物理学专家,通过计算再一次证实这一公式是正确的。根据这一公式,给出几组假定的运动员推
The main factor that determines the speed of putting a shot is the initial speed of the shot, the shot angle, the shot height. On the shot angle, the textbooks in our country that is considered a 40 ° ~ 44 °, a think, in fact, should be 38 ° ~ 42 ° world-class shot put the majority of players shot angle less than the above angle, called Low-angle push the ball. First, the best shot in theory Throw shots belong to the game away from the project. 1 978 National Sports Department “track and field” universal textbook, for the first time put forward to calculate the angle of the hand formula, is 45 ° -β / 2 (β is the bevel). Recently I consulted a specialists in physics, confirmed once again by calculation that this formula is correct. According to this formula, given several sets of hypothetical athletes push