Động học của chuyển động tròn đều

Home Lớp 10 Vật lý 10 - Sách kết nối tri thức Bài 31. Động học của chuyển động tròn đềuBài tập cơ bản

{"common":{"save":0,"post_id":"8851","level":1,"total":10,"point":10,"point_extra":0},"segment":[{"id":"8284","mon_id":"1158790","chapter_id":"1159899","post_id":"8851","question":"Chuy\u1ec3n \u0111\u1ed9ng c\u1ee7a v\u1eadt nào d\u01b0\u1edbi \u0111ây là chuy\u1ec3n \u0111\u1ed9ng tròn \u0111\u1ec1u?<\/p>","options":["A.<\/strong> Chuy\u1ec3n \u0111\u1ed9ng c\u1ee7a cái \u0111\u1ea7u van xe \u0111\u1ea1p \u0111\u1ed1i v\u1edbi m\u1eb7t \u0111\u01b0\u1eddng khi xe ch\u1ea1y \u0111\u1ec1u.","B.<\/strong> Chuy\u1ec3n \u0111\u1ed9ng c\u1ee7a m\u1ed9t con l\u1eafc \u0111\u1ed3ng h\u1ed3.","C.<\/strong> Chuy\u1ec3n \u0111\u1ed9ng c\u1ee7a m\u1ed9t m\u1eaft xích xe \u0111\u1ea1p.","D.<\/strong> Chuy\u1ec3n \u0111\u1ed9ng c\u1ee7a cái \u0111\u1ea7u van xe \u0111\u1ea1p \u0111\u1ed1i v\u1edbi ng\u01b0\u1eddi ng\u1ed3i trên xe khi xe ch\u1ea1y \u0111\u1ec1u."],"correct":"4","level":"1","hint":"","answer":"Ch\u1ecdn D.<\/strong> Chuy\u1ec3n \u0111\u1ed9ng c\u1ee7a cái \u0111\u1ea7u van xe \u0111\u1ea1p \u0111\u1ed1i v\u1edbi ng\u01b0\u1eddi ng\u1ed3i trên xe khi xe ch\u1ea1y \u0111\u1ec1u.<\/span><\/p>A sai vì chuy\u1ec3n \u0111\u1ed9ng trên qu\u1ef9 \u0111\u1ea1o \u0111\u01b0\u1eddng th\u1eb3ng.<\/p>B sai vì chuy\u1ec3n \u0111\u1ed9ng trên cung tròn. <\/p>C sai vì chuy\u1ec3n \u0111\u1ed9ng hình elip.<\/p>","type":"choose","extra_type":"classic","user_id":"131","test":"0","date":"2025-04-13 09:26:46","option_type":"txt","len":3},{"id":"8286","mon_id":"1158790","chapter_id":"1159899","post_id":"8851","question":"Chuy\u1ec3n \u0111\u1ed9ng tròn \u0111\u1ec1u có<\/p>","options":["A.<\/strong> vect\u01a1 v\u1eadn t\u1ed1c không \u0111\u1ed5i.","B.<\/strong> t\u1ed1c \u0111\u1ed9 ph\u1ee5 thu\u1ed9c vào bán kính qu\u1ef9 \u0111\u1ea1o.","C.<\/strong> t\u1ed1c \u0111\u1ed9 góc ph\u1ee5 thu\u1ed9c vào bán kính qu\u1ef9 \u0111\u1ea1o.","D. <\/strong>chu kì t\u1ec9 l\u1ec7 v\u1edbi th\u1eddi gian chuy\u1ec3n \u0111\u1ed9ng."],"correct":"2","level":"1","hint":"","answer":"Ch\u1ecdn B.<\/strong> t\u1ed1c \u0111\u1ed9 ph\u1ee5 thu\u1ed9c vào bán kính qu\u1ef9 \u0111\u1ea1o.<\/span><\/p>A sai vì vect\u01a1 v\u1eadn t\u1ed1c có thay \u0111\u1ed5i h\u01b0\u1edbng.<\/p>B \u0111úng vì chuy\u1ec3n \u0111\u1ed9ng tròn \u0111\u1ec1u có t\u1ed1c \u0111\u1ed9 ph\u1ee5 thu\u1ed9c vào bán kính qu\u1ef9 \u0111\u1ea1o theo công th\u1ee9c: $v=\\omega.r$<\/span>.<\/p>C sai vì t\u1ed1c \u0111\u1ed9 góc là $\\omega=\\dfrac{\\theta}{t}$<\/span>.<\/p>D sai vì chu kì là kho\u1ea3ng th\u1eddi gian v\u1eadt \u0111i h\u1ebft m\u1ed9t vòng.<\/p>","type":"choose","extra_type":"classic","user_id":"131","test":"0","date":"2025-04-13 09:30:46","option_type":"txt","len":3},{"id":"8287","mon_id":"1158790","chapter_id":"1159899","post_id":"8851","question":"Chuy\u1ec3n \u0111\u1ed9ng c\u1ee7a v\u1eadt nào d\u01b0\u1edbi \u0111ây \u0111\u01b0\u1ee3c coi là chuy\u1ec3n \u0111\u1ed9ng tròn \u0111\u1ec1u?  <\/p>","options":["A.<\/strong> Chuy\u1ec3n \u0111\u1ed9ng quay c\u1ee7a bánh xe ô tô khi \u0111ang hãm phanh.","B.<\/strong> Chuy\u1ec3n \u0111\u1ed9ng c\u1ee7a m\u1ed9t qu\u1ea3 bóng \u0111ang l\u0103n \u0111\u1ec1u trên m\u1eb7t sân.","C.<\/strong> Chuy\u1ec3n \u0111\u1ed9ng c\u1ee7a \u0111i\u1ec3m treo các gh\u1ebf ng\u1ed3i trên chi\u1ebfc \u0111u quay \u0111ang quay \u0111\u1ec1u.","D.<\/strong> Chuy\u1ec3n \u0111\u1ed9ng quay c\u1ee7a cánh qu\u1ea1t khi v\u1eeba t\u1eaft \u0111i\u1ec7n."],"correct":"3","level":"1","hint":"","answer":"Ch\u1ecdn C.<\/strong> Chuy\u1ec3n \u0111\u1ed9ng c\u1ee7a \u0111i\u1ec3m treo các gh\u1ebf ng\u1ed3i trên chi\u1ebfc \u0111u quay \u0111ang quay \u0111\u1ec1u.<\/span><\/p>A, D sai vì t\u1ed1c \u0111\u1ed9 chuy\u1ec3n \u0111\u1ed9ng không \u0111\u1ec1u.<\/p>B sai vì qu\u1ea3 bóng chuy\u1ec3n \u0111\u1ed9ng v\u1ea1ch ra qu\u1ef9 \u0111\u1ea1o th\u1eb3ng trên m\u1eb7t sân.<\/p>","type":"choose","extra_type":"classic","user_id":"131","test":"0","date":"2025-04-13 09:32:40","option_type":"txt","len":3}]}