轮轴的轴不变时,轮越大越省力.
轮轴的轴不变时,轮越大越省力.
物理人气：411 ℃时间：2019-12-07 19:35:16
优质解答
轴不变轮子越大,此种模式越趋向于费力杠杆,当然不会省力.
我来回答
类似推荐
猜你喜欢
- 158.Mary had no trouble _____ her career because she had always wanted to be a doctor.
- 2简述组成物质的微观结构．
- 3i forgot to tell u that Fred called last night to borrow your sleeping bag.
- 4温度计相关.
- 5at the end of the street,you'll find a hospital on you left的同义句
- 6生产一批零件,甲每小时可做18个,乙单独做要12小时完成.现在由甲乙两人合作,完成任务时,加以生产零件的数量之比是3:5.甲一共生产了多少个零件?
- 7瞻仰、凝视、眺望、浏览、俯视、张望、仰望、注视是什么意思
- 8需求：八年级上册语文教科书课外古诗词背诵
- 9The car___on the way to the station,and we had to get a taxi
- 10小倩同学用如图所示的水桶提了15升水给刚栽上树苗浇水,已知水桶自身的质量为1kg