受力分析
一、下面各图的接触面均光滑，对小球受力分析：
![](https://wkrtcs.bdimg.com/rtcs/image?w=616.00&md5sum=dc9949750ed71b50b00b1a64976f7116&sign=bf282711ad&rtcs_flag=1&rtcs_ver=4&l=webapp&bucketNum=484&ipr={"t":"img","r":"r_3","w":"616.00","h":"240.00","dataType":"gif","c":"word/media/image2.gif"})
![](https://wkrtcs.bdimg.com/rtcs/image?w=613.33&md5sum=dc9949750ed71b50b00b1a64976f7116&sign=bf282711ad&rtcs_flag=1&rtcs_ver=4&l=webapp&bucketNum=484&ipr={"t":"img","r":"r_3","w":"613.33","h":"105.33","dataType":"gif","c":"word/media/image3.gif"})
![](https://wkrtcs.bdimg.com/rtcs/image?w=566.67&md5sum=dc9949750ed71b50b00b1a64976f7116&sign=bf282711ad&rtcs_flag=1&rtcs_ver=4&l=webapp&bucketNum=484&ipr={"t":"img","r":"r_2","w":"566.67","h":"133.33","dataType":"gif","c":"word/media/image4.gif"})
二、下面各图的接触面均粗糙，对物体受力分析：
![](https://wkrtcs.bdimg.com/rtcs/image?w=589.33&md5sum=dc9949750ed71b50b00b1a64976f7116&sign=bf282711ad&rtcs_flag=1&rtcs_ver=4&l=webapp&bucketNum=484&ipr={"t":"img","r":"r_3","w":"589.33","h":"317.33","dataType":"gif","c":"word/media/image5.gif"})
![](https://wkrtcs.bdimg.com/rtcs/image?w=576.00&md5sum=dc9949750ed71b50b00b1a64976f7116&sign=bf282711ad&rtcs_flag=1&rtcs_ver=4&l=webapp&bucketNum=484&ipr={"t":"img","r":"r_3","w":"576.00","h":"336.00","dataType":"gif","c":"word/media/image6.gif"})
三、分别对A、B两物体受力分析：
![](https://wkrtcs.bdimg.com/rtcs/image?w=609.33&md5sum=dc9949750ed71b50b00b1a64976f7116&sign=bf282711ad&rtcs_flag=1&rtcs_ver=4&l=webapp&bucketNum=484&ipr={"t":"img","w":"609.33","h":"157.33","dataType":"gif","c":"word/media/image7.gif"})
![](https://wkrtcs.bdimg.com/rtcs/image?w=529.33&md5sum=dc9949750ed71b50b00b1a64976f7116&sign=bf282711ad&rtcs_flag=1&rtcs_ver=4&l=webapp&bucketNum=484&ipr={"t":"img","w":"529.33","h":"149.33","dataType":"gif","c":"word/media/image8.gif"})
![](https://wkrtcs.bdimg.com/rtcs/image?w=106.67&md5sum=dc9949750ed71b50b00b1a64976f7116&sign=bf282711ad&rtcs_flag=1&rtcs_ver=4&l=webapp&bucketNum=484&ipr={"t":"img","r":"r_8","w":"106.67","h":"126.67","dataType":"gif","c":"word/media/image9.gif"})
![](https://wkrtcs.bdimg.com/rtcs/image?w=466.67&md5sum=dc9949750ed71b50b00b1a64976f7116&sign=bf282711ad&rtcs_flag=1&rtcs_ver=4&l=webapp&bucketNum=484&ipr={"t":"img","w":"466.67","h":"54.67","dataType":"gif","c":"word/media/image12.gif"})
![](https://wkrtcs.bdimg.com/rtcs/image?w=486.67&md5sum=dc9949750ed71b50b00b1a64976f7116&sign=bf282711ad&rtcs_flag=1&rtcs_ver=4&l=webapp&bucketNum=484&ipr={"t":"img","w":"486.67","h":"56.00","dataType":"gif","c":"word/media/image16.gif"})
![](https://wkrtcs.bdimg.com/rtcs/image?w=208.00&md5sum=dc9949750ed71b50b00b1a64976f7116&sign=bf282711ad&rtcs_flag=1&rtcs_ver=4&l=webapp&bucketNum=484&ipr={"t":"img","r":"r_10","w":"208.00","h":"133.00","dataType":"png","c":"word/media/image20.png","imgOriW":496,"imgOriH":320})
![](https://wkrtcs.bdimg.com/rtcs/image?w=485.33&md5sum=dc9949750ed71b50b00b1a64976f7116&sign=bf282711ad&rtcs_flag=1&rtcs_ver=4&l=webapp&bucketNum=484&ipr={"t":"img","w":"485.33","h":"57.33","dataType":"gif","c":"word/media/image23.gif"})
![](https://wkrtcs.bdimg.com/rtcs/image?w=616.00&md5sum=dc9949750ed71b50b00b1a64976f7116&sign=bf282711ad&rtcs_flag=1&rtcs_ver=4&l=webapp&bucketNum=484&ipr={"t":"img","w":"616.00","h":"336.00","dataType":"gif","c":"word/media/image24.gif"})
![](https://wkrtcs.bdimg.com/rtcs/image?w=190.00&md5sum=dc9949750ed71b50b00b1a64976f7116&sign=bf282711ad&rtcs_flag=1&rtcs_ver=4&l=webapp&bucketNum=484&ipr={"t":"img","r":"r_10","w":"190.00","h":"129.00","dataType":"png","c":"word/media/image28.png","imgOriW":435,"imgOriH":296})
![](https://wkrtcs.bdimg.com/rtcs/image?w=477.33&md5sum=dc9949750ed71b50b00b1a64976f7116&sign=bf282711ad&rtcs_flag=1&rtcs_ver=4&l=webapp&bucketNum=484&ipr={"t":"img","r":"r_26","w":"477.33","h":"50.67","dataType":"gif","c":"word/media/image30.gif"})
![](https://wkrtcs.bdimg.com/rtcs/image?w=365.33&md5sum=dc9949750ed71b50b00b1a64976f7116&sign=bf282711ad&rtcs_flag=1&rtcs_ver=4&l=webapp&bucketNum=484&ipr={"t":"img","r":"r_26","w":"365.33","h":"53.33","dataType":"gif","c":"word/media/image34.gif"})
![](https://wkrtcs.bdimg.com/rtcs/image?w=477.33&md5sum=dc9949750ed71b50b00b1a64976f7116&sign=bf282711ad&rtcs_flag=1&rtcs_ver=4&l=webapp&bucketNum=484&ipr={"t":"img","w":"477.33","h":"50.67","dataType":"gif","c":"word/media/image39.gif"})
![](https://wkrtcs.bdimg.com/rtcs/image?w=205.00&md5sum=dc9949750ed71b50b00b1a64976f7116&sign=bf282711ad&rtcs_flag=1&rtcs_ver=4&l=webapp&bucketNum=484&ipr={"t":"img","r":"r_10","w":"205.00","h":"142.00","dataType":"png","c":"word/media/image44.png","imgOriW":528,"imgOriH":335})
![](https://wkrtcs.bdimg.com/rtcs/image?w=477.33&md5sum=dc9949750ed71b50b00b1a64976f7116&sign=bf282711ad&rtcs_flag=1&rtcs_ver=4&l=webapp&bucketNum=484&ipr={"t":"img","w":"477.33","h":"50.67","dataType":"gif","c":"word/media/image47.gif"})
![](https://wkrtcs.bdimg.com/rtcs/image?w=656.00&md5sum=dc9949750ed71b50b00b1a64976f7116&sign=bf282711ad&rtcs_flag=1&rtcs_ver=4&l=webapp&bucketNum=484&ipr={"t":"img","r":"r_10","w":"656.00","h":"875.00","dataType":"jpeg","c":"word/media/image51.jpeg","imgOriW":1504,"imgOriH":2006})
![](https://wkrtcs.bdimg.com/rtcs/image?w=656.00&md5sum=dc9949750ed71b50b00b1a64976f7116&sign=bf282711ad&rtcs_flag=1&rtcs_ver=4&l=webapp&bucketNum=484&ipr={"t":"img","r":"r_10","w":"656.00","h":"875.00","dataType":"jpeg","c":"word/media/image52.jpeg","imgOriW":1504,"imgOriH":2006})
![](https://wkrtcs.bdimg.com/rtcs/image?w=656.00&md5sum=dc9949750ed71b50b00b1a64976f7116&sign=bf282711ad&rtcs_flag=1&rtcs_ver=4&l=webapp&bucketNum=484&ipr={"t":"img","r":"r_10","w":"656.00","h":"875.00","dataType":"jpeg","c":"word/media/image53.jpeg","imgOriW":1504,"imgOriH":2006})
![](https://wkrtcs.bdimg.com/rtcs/image?w=655.93&md5sum=dc9949750ed71b50b00b1a64976f7116&sign=bf282711ad&rtcs_flag=1&rtcs_ver=4&l=webapp&bucketNum=484&ipr={"t":"img","r":"r_10","w":"655.93","h":"874.13","dataType":"jpeg","c":"word/media/image54.jpeg","imgOriW":1504,"imgOriH":2006})
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