山西省太原市2024-2025學(xué)年高一下學(xué)期期中考試 物理含答案

一、單項(xiàng)選擇題：本題包含7小題，每小題4分，共28分。題號1234567選項(xiàng)CCCBADB二、多項(xiàng)選擇題：本題包含3小題，每小題6分，共18分。題號89選項(xiàng)BDBCBD三、實(shí)驗(yàn)題：共16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、計(jì)算題：共38分。13.（8分）設(shè)地球質(zhì)量為M，月球質(zhì)量為m1，蘋果質(zhì)量為m2，地球半徑為R，則月球與地球中心距離r=60R對月球，由萬有引力提供向心力··········································································（3分）對蘋果，由萬有引力等于重力··········································································（3分）:2（2分）14.（12分）（1）汽車在A點(diǎn)對橋面壓力為0，重力提供向心力················································································(2分)汽車從A點(diǎn)做平拋運(yùn)動，豎直方向·······································································(2分)水平方向·····································································(2分)····································································(1分)an=50v3m········································································(1分)（2）汽車在C點(diǎn)對橋面壓力為0，重力沿半徑方向分力提供向心力······················································(2分)(2分)15.（18分）（1）小物塊P在A點(diǎn)時摩擦力恰好為0，此時小物塊只受重力mg和陶罐對它的支持力N。將支持力N沿水平和豎直方向分解水平方向Nsin0-mufsino·····················································(2分)················································································(1分)（2）小物塊有沿罐壁向上滑動的趨勢，此時小物塊受重力mg支持力N'和摩擦力f豎直方向N'cos0=mg+fsino··················································(2分)···············································································(1分)方向沿罐壁向下············································································(1分)3（3）當(dāng)角速度最小時，小物塊有沿罐壁向下滑動的趨勢，摩擦力方向沿罐壁向上豎直方向N"cos0+fmussinb=mg··········································(2分)fimr=UN"··············································································