问题标题：
英语翻译Workisforcetimesdistance,andsincetheforceisincreasedonthelargerpiston,thedistancetheforceisappliedovermustbedecreased.Theworkofthesmallpiston,100newtonsmultipliedby0.5meter(50cm)is50joules(J),whichis
问题描述：
英语翻译
Workisforcetimesdistance,andsincetheforceisincreasedonthelargerpiston,thedistancetheforceisappliedovermustbedecreased.Theworkofthesmallpiston,100newtonsmultipliedby0.5meter(50cm)is50joules(J),whichisthesameastheworkofthelargepiston,500newtonsmultipliedby0.1meter(10cm).
毕训银回答：
做功等于力乘以距离,由于大活塞施加的力增大了,施力的距离就必须缩短.小活塞做的功为100牛顿乘以0.5米（50厘米）,等于50焦尔（J）,这与大活塞做的功——500牛顿乘以0.1米（10厘米）——是相等的.
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