2022年2018学年高中物理人教版必修2课时作业：第五章曲线运动圆周运动Word版含答案 .pdf

名师精编优秀教案课时作业(三)圆周运动一、单项选择题1下列关于甲、乙两个做圆周运动的物体的有关说法正确的是()A它们线速度相等，角速度一定也相等B它们角速度相等，线速度一定也相等C它们周期相等，角速度一定也相等D它们周期相等，线速度一定也相等解析：由vr知，只有甲、乙两个做圆周运动的物体的半径相等时，它们的线速度相等，角速度才相等，A、B错；由 2T知，甲、乙周期相等，角速度一定也相等，C对；由v2rT知，甲、乙周期相等，线速度不一定相等，D错答案：C 2甲沿着半径为R的圆周跑道匀速跑步，乙沿着半径为2R的圆周跑道匀速跑步，在相同的时间内，甲、乙各自跑了一圈，他们的角速度和线速度的大小分别为1、2和v1、v2，则()A12，v1v2B12，v1v2C12，v1v2 D12，v1v2解析：根据 2T可知，二者角速度相同，根据vr可知v10，2ng2d(n1,2,3，)D只要v0g2dL，就一定能击中圆盘上的A点解析：飞镖平抛有Lv0t，d12gt2，则v0Lg2d，在飞镖运动的时间内圆盘转过角度(2n1)(n 0,1,2，)，又 t，得 (2n1)g2d，故选项 B正确答案：B 二、多项选择题7一般的转动机械上都标有“转速 r/min”，该数值是转动机械正常工作时的转速，不同的转动机械上标有的转速一般是不同的下列有关转速的说法正确的是()A转速越大，说明该转动机械正常工作时转动的线速度一定越大B转速越大，说明该转动机械正常工作时转动的角速度一定越大C转速越大，说明该转动机械正常工作时转动的周期一定越大D转速越大，说明该转动机械正常工作时转动的周期一定越小解析：转速n越大，角速度2n一定越大，周期T21n一定越小，由vr知只有r一定时，越大，v才越大，B、D对答案：BD 8质点做匀速圆周运动，则()A在任何相等的时间里，质点的位移都相等B在任何相等的时间里，质点通过的路程都相等C在任何相等的时间里，质点运动的平均速度都相同D在任何相等的时间里，连接质点和圆心的半径转过的角度都相等文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2名师精编优秀教案解析：如图所示，经T/4，质点由A到B，再经T/4，质点由B到C，由于线速度大小不变，根据线速度的定义，svT/4，所以相等时间内通过的路程相等，B对但位移xAB、xBC大小相等，方向并不相同，平均速度不同，A、C 错由角速度的定义 t知，t相同，t相同，D对答案：BD 9如图所示，一个圆环绕中心线AB以一定的角速度转动，下列说法中正确的是()AP、Q两点的角速度相同BP、Q两点的线速度相同CP、Q两点的角速度之比为3：1 DP、Q两点的线速度之比为3：1 解析：同一圆周上各点的周期和角速度都是相同的，选项A正确，选项 C错误；设角速度为，半径为r，则P、Q两点的线速度分别为vPrsin60，vQrsin30，得vP：vQ3：1，选项 B错误，选项D正确答案：AD 10如图所示，一个匀速转动的半径为r的水平圆盘上放着两个木块M和N，木块M放在圆盘的边缘处，木块N放在离圆心13r的地方，它们都随圆盘一起运动比较两木块的线速度和角速度，下列说法正确的是()A两木块的线速度相等B两木块的角速度相等CM的线速度是N的线速度的3 倍文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2名师精编优秀教案DM的角速度是N的角速度的3 倍解析：由传动装置特点知，M、N两木块有相同的角速度，又由vr知，因rN13r，rMr，故木块M的线速度是木块N线速度的3 倍，选项 B、C正确答案：BC 11A、B两个质点分别做匀速圆周运动，在相同的时间内它们通过的路程之比sA：sB：3，转过的角度之比A：B：2，则下列说法正确的是()A它们的半径之比rA；rB：3 B它们的半径之比rA：rB：9 C它们的周期之比TA：TB：3 D它们的频率之比fA：fB：3 解析：A、B两个质点，在相同的时间内通过的路程之比为2：3，即通过的弧长之比为 2：3，所以vA：vB2：3；又相同的时间内转过的角度之比A：B3：2，根据 t得 A：B3：2，又vr，所以rA：rBvAvBBA23234：9，A选项错误，B选项正确根据T2知，TA：TBB：A2：3，C选项正确又T1f，所以fA：fBTB：TA3：2，D选项错答案：BC 三、非选择题12如图所示的装置中，已知大轮A的半径是小轮B的半径的3 倍，A、B分别在边缘接触，形成摩擦传动，接触点无打滑现象，B为主动轮，B转动时边缘的线速度为v，角速度为.求：(1)两轮转动周期之比；(2)A轮边缘的线速度大小；(3)A轮的角速度大小解析：(1)因接触点无打滑现象，所以A轮边缘的线速度与B轮边缘的线速度相等，vAvBv.由T2rv，得TATBrAvBrBvArArB31.(2)vAvBv.文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2名师精编优秀教案(3)由 vr，得ABvArBvBrArBrA13，所以 A13B13.答案：(2)v(3)13文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2文档编码:CX1X5N3N6R6 HB2D7H2P8V5 ZE1B1H1G5U2