The deadlift is a popular weightlifting exercise and a common everyday move. Despite this, there are few weightlifting examples in the physics education literature. We calculated the force that the lifter applies to the bar using video analysis and accelerometers, with an inverse dynamics procedure. The presented example is safe, practical, affordable and applicable to any classroom. We compared a one-dimensional to a two-dimensional treatment of the problem, video analysis to accelerometers, and different types of accelerometers. The results are in very good agreement. This allows a variety of approaches and educational opportunities—from a quick demonstration to a small student project. Students have the opportunity to learn about Newton’s second law with non-constant acceleration, inverse dynamics, vector components in different frames of reference, and connections between force, acceleration and velocity in the context of an interesting real-life example.

硬拉是一种流行的举重运动，也是日常的日常运动。尽管如此，在物理教育文献中很少有举重的例子。我们使用视频分析和加速度计，采用逆动力学程序，计算了挺杆施加在钢筋上的力。所提供的示例是安全，实用，可负担的并且适用于任何教室。我们比较了问题的一维解决方案和二维解决方案，将视频分析与加速度计进行了比较，并对不同类型的加速度计进行了比较。结果非常吻合。这提供了各种方法和教育机会-从快速演示到小型学生项目。学生有机会以非恒定的加速度，逆动力学，