关于人体输出功率的估测题是近几年中考的热点,如结合引体向上、俯卧撑、跳绳等活动。让学生领悟了物理学的原理和方法。充分体现了素质教育的要求．例1如何估测你搬箱子上楼时的功率,请写出实验步骤,列出公式．分析：搬着物体上楼时,是克服物体重力做功,W=Fs=Gh=mgh,再据P=W/t可以求出人对箱子做功的功率．解答：(1)用磅秤测出箱子的质量m； The assessment of the human output power is a hot topic in the examinations in recent years, such as combining pull-ups, push-ups, and skipping ropes. Let students understand the principles and methods of physics. Fully reflects the requirements of quality education. Example 1 How to estimate the power when you move a box upstairs? Write out the experiment procedure and list the formula. Analysis: When the object is moved upstairs, it is to overcome the object gravity work, W = Fs = Gh = mgh, and then according to P = W / t can be obtained by man power to work on the box. Answer: (1) measure the mass m of the box with scales;