神马作文网英语翻译Once a 17 kg crate is in motion on a horizontal fl
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英语翻译
Once a 17 kg crate is in motion on a horizontal floor,a horizontal force of 65 N keeps the crate moving with a constant velocity.The acceleration of gravity is 9.81 m/s2 .What is µk,the coefficient of kinetic fric- tion,between the crate and the floor?
Once a 17 kg crate is in motion on a horizontal floor,a horizontal force of 65 N keeps the crate moving with a constant velocity.The acceleration of gravity is 9.81 m/s2 .What is µk,the coefficient of kinetic fric- tion,between the crate and the floor?
一个质量为17公斤的板块在水平面上运动,当受到65N的水平力作用时,板块做匀速运动.已知重力加速度9.81 m/s2 ,求板块与水平面之间的摩擦系数
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