1.单选题- (共10题)

A. 夏季时的拉力较大
B. 冬季时的拉力较大
C. 夏季和冬季时的拉力一样大
D. 无法确定

A.两物体间的摩擦力大小为F ![]() | B.两物体间弹力大小可能为0 |
C.物体Q对地面的压力大小为2mg ![]() | D.物体P受到细线的拉力大小为![]() |



A.MO所受的拉力大小为![]() | B.MO所受的拉力大小为![]() |
C.NO所受的拉力大小为![]() | D.NO所受的拉力大小为![]() |

A.橡皮条固定端的位置 | B.描下O点位置、两条细绳套的方向及两个弹簧测力计的读数 |
C.橡皮条伸长后的总长度 | D.两个弹簧测力计的读数 |

A.kL ![]() | B.![]() ![]() | C.![]() ![]() | D.2kL |

A. f1一定增大 B. f1、f2都不一定增大 C. f1、f2均增大 D. f2一定增大

A. 50N B.



A.F变大 | B.F变小 | C.FN变大 | D.FN变小 |

A.50 N |
B.50![]() |
C.100 N |
D.100![]() |
2.选择题- (共3题)

阅读理解
Remember that goals are dreams with a timetable. Our goals are important for us to create what enriches our life. A very common attitude among people who are successful is that their success lies in their ability to provide themselves goals that are both numerous and exciting. When you think about your future,you are helping to feed a long-term goal of what you want to create.
To realize your dreams,you must translate your vision into a series of actions you can take as soon as possible. You should be able to measure these results,to make sure they take you wherever you want. And this step should not be viewed lightly! Indeed,very few people set goals and concrete actions for themselves to achieve. Very few people note what they want to accomplish,and know each day whether they have indeed advanced in the direction of their dreams.
Therefore one of the secrets that you can get results from is to write down your goals on paper first. When you give your dreams a form,they become more concrete,and you can refer to them often and easily. Whenever you read the dreams that you note down,you fill your mind with positive and motivational thoughts.
Unfortunately,many people stop there. They just simply make wishes, hope and wait. These people do not bring positive difference in their lives,because that sort of behavior is just wishful thinking. Success is not at all a miracle. It depends on clear and realistic targets through serious thoughts:concrete actions and perseverance(毅力). Don't forget,your past does not determine your future. Only you now is your potential!
根据短文内容,选择最佳答案,并将选定答案的字母标号填在题前括号内。
3.多选题- (共4题)

A.砂堆稳定时,砂堆底面受到地面的摩擦力一定为零 |
B.砂堆稳定时,只有形成严格规则的圆锥,底面受到地面的摩擦力才为零 |
C.砂堆稳定时形成的圆锥的底角最大值满足tan αmax=μ |
D.砂堆稳定时形成的圆锥的底角最大值满足cos αmax=μ |

A.风力增大时,轻质绳对球B的拉力保持不变 |
B.球B受到的风力F为mBgtan θ |
C.杆对环A的支持力随着风力的增加而增加 |
D.环A与水平细杆间的动摩擦因数为![]() |

A.b对c的摩擦力一定减小 ![]() | B.b对c的摩擦力方向可能平行斜面向上 |
C.地面对c的摩擦力方向一定向右 ![]() | D.地面对c的摩擦力方向一定向左 |

A.小球对斜劈的压力先减小后增大 |
B.轻绳对小球的拉力逐渐增大 |
C.竖直杆对小滑块的弹力先增大后减小 |
D.对小滑块施加的竖直向上的拉力逐渐增大 |
4.填空题- (共3题)




5.解答题- (共4题)

(1)圆环与棒间的动摩擦因数μ;
(2)重物G的质量M.

(1)弹簧的伸长量x;
(2)物块A受到的摩擦力f的大小和方向.
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【1】题量占比
单选题:(10道)
选择题:(3道)
多选题:(4道)
填空题:(3道)
解答题:(4道)
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【2】:难度分析
1星难题:0
2星难题:0
3星难题:0
4星难题:2
5星难题:0
6星难题:10
7星难题:0
8星难题:7
9星难题:1