// Numbas version: finer_feedback_settings
{"name": "Student i heis", "extensions": ["quantities"], "custom_part_types": [], "resources": [["question-resources/DALLE_2024-08-21_16.09.00_-_A_simple_drawing_of_a_stick_figure_standing_inside_an_elevator._The_elevator_should_have_a_basic_box-like_structure_with_doors_slightly_open_and_sim.webp", "/srv/numbas/media/question-resources/DALLE_2024-08-21_16.09.00_-_A_simple_drawing_of_a_stick_figure_standing_inside_an_elevator._The_elevator_should_have_a_basic_box-like_structure_with_doors_slightly_open_and_sim.webp"]], "navigation": {"allowregen": true, "showfrontpage": false, "preventleave": false, "typeendtoleave": false}, "question_groups": [{"pickingStrategy": "all-ordered", "questions": [{"name": "Student i heis", "tags": ["MCQ", "Reference frames"], "metadata": {"description": "<p>Brukes for testing av line&aelig;rt akselerert referansesystem.</p>", "licence": "Creative Commons Attribution 4.0 International"}, "statement": "<p><img src=\"resources/question-resources/DALLE_2024-08-21_16.09.00_-_A_simple_drawing_of_a_stick_figure_standing_inside_an_elevator._The_elevator_should_have_a_basic_box-like_structure_with_doors_slightly_open_and_sim.webp\" width=\"158\" height=\"158\"/></p>\n<p>En student st&aring;r i en heis og plasserer seg p&aring; en vekt som m&aring;ler kraft i Newton. F&oslash;r heisen begynner &aring; bevege seg, ser studenten at vekten viser {F}. Heisen begynner s&aring; &aring; bevege seg {retning}. I l&oslash;pet av noen f&aring; sekunder akselererer heisen til en konstant hastighet, som den opprettholder mens den beveger seg mellom to etasjer.</p>", "advice": "<p>Om vi velger et referansesystem som f&oslash;lger heisen, virker det to fysiske krefter p&aring; studenten: normalkraft (som m&aring;les av vekten) og tyngdekraft.</p>\n<p>I fasen med konstant hastighet m&aring; disse v&aelig;re like stor, fordi studenten st&aring;r i ro.</p>\n<p>I fasen med akselerasjon virker det ogs&aring; en fiktiv kraft {fiktivretning}, mens summen av kreftene fremdeles m&aring; v&aelig;re null. 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