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学习了功的相关知识后,大家都知道功的计算公式为W=Fscosθ,此式只适用于恒力做功的计算,对于变力做功问题该如何求解呢?这就需要我们另辟蹊径,才能顺利求解.下面通过实例向大家介绍一些行之有效的解题方法,相信对提高同学们的思维灵活性,解题技能大有帮助.一、利用功率求解对于汽车等以恒定功率运动的问题,可运用功率求解变力做功.例1质量为5×10~5kg的机车,以恒定功率由静
After learning the related knowledge of work, we all know that the calculation formula of work is W = Fscosθ. This formula is only applicable to the calculation of constant work, and how to solve the problem of variable work? This requires us to find another way to solve the problem The following examples to introduce you to some effective problem-solving methods, I believe to improve students’ thinking flexibility, problem-solving skills will be helpful. First, the use of power to solve For cars and other issues with a constant power exercise can be used Power to solve the variable force work. Example 1 mass of 5 × 10 ~ 5kg locomotive, with constant power from the static