Physics..Equilibrium

2008-08-01 11:25 pm

A cyclist is rounding a bend of radius 10m who is on a slope 10o.
The mass of the bicycle and the cyclist is 80kg.
At some instant, the normal reaction turns with an angle of 20o.

(a)Find the normal reaction and the frictional force.
(b)What is the speed of the cyclist?
(c)If the coefficient of friction between the tyres and the bend is 0.2,
calculate the maximum speed of the cyclist without skidding.

回答 (1)

用戶34881

2008-08-02 12:15 am

✔ 最佳答案

(a)Find the normal reaction and the frictional force.

圖片參考：http://hk.geocities.com/namen1997/p0024a.jpg

圖片參考：http://hk.geocities.com/namen1997/p0024b.jpg

圖片參考：http://hk.geocities.com/namen1997/p0024c.jpg

(b)What is the speed of the cyclist?

圖片參考：http://hk.geocities.com/namen1997/p0024d.jpg

(c)If the coefficient of friction between the tyres and the bend is 0.2,
calculate the maximum speed of the cyclist without skidding.

圖片參考：http://hk.geocities.com/namen1997/p0024e.jpg

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