12024～2025学年第二学期高一年级期中学业诊断物理参考答案及评分建议一、单项选择题：本题包含7小题，每小题4分，共28分。二、多项选择题：本题包含3小题，每小题6分，共18分。题号8910选项BDBCBD三、实验题：共16分。11.（7分）（1）1.0（2分）（2）3.9（3分）（3）10（2分）12.（9分）（1）0.30（3分）（2）10（3分）（3）1.7（3分）四、计算题：共38分。13.（8分）设地球质量为M，月球质量为m1，苹果质量为m2，地球半径为R，则月球与地球中心距离r=60R对月球，由万有引力提供向心力··········································································（3分）对苹果，由万有引力等于重力··········································································（3分）题号1234567选项CCCBADB2···························································（2分）14.（12分）（1）汽车在A点对桥面压力为0，重力提供向心力················································································(2分)汽车从A点做平抛运动，竖直方向·······································································(2分)水平方向·····································································(2分)····································································(1分)········································································(1分)（2）汽车在C点对桥面压力为0，重力沿半径方向分力提供向心力······················································(2分)·······················································(2分)15.（18分）（1）小物块P在A点时摩擦力恰好为0，此时小物块只受重力mg和陶罐对它的支持力N。将支持力N沿水平和竖直方向分解竖直方向·······························································(2分)水平方向·····················································(2分)················································································(1分)（2）小物块有沿罐壁向上滑动的趋势，此时小物块受重力mg支持力N'和摩擦力f竖直方向··················································(2分)水平方向·······································(2分)···············································································(1分)方向沿罐壁向下············································································(1分)3（3）当角速度最小时，小物块有沿罐壁向下滑动的趋势，摩擦力方向沿罐壁向上竖直方向··········································(2分)水平方向·······························(2分)················································································(1分)················································································(2分)