{"id":16594,"date":"2024-09-20T11:14:09","date_gmt":"2024-09-20T14:14:09","guid":{"rendered":"https:\/\/xequematenem.com.br\/blog\/?p=16594"},"modified":"2024-09-20T11:14:10","modified_gmt":"2024-09-20T14:14:10","slug":"questao-105-enem-ppl-2020","status":"publish","type":"post","link":"https:\/\/xequematenem.com.br\/blog\/questao-105-enem-ppl-2020\/","title":{"rendered":"Quest\u00e3o 105 -ENEM PPL 2020"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Um caminh\u00e3o de massa 5 toneladas, carregado com carga de 3 toneladas, tem eixos articulados que permitem fazer o uso de 4 a 12 pneus (aos pares) simultaneamente. O n\u00famero de pneus em contato com o solo \u00e9 determinado a fim de que a press\u00e3o exercida por cada pneu contra o solo n\u00e3o supere o dobro da press\u00e3o atmosf\u00e9rica. A \u00e1rea de contato entre cada pneu e o asfalto equivale \u00e0 \u00e1rea de um ret\u00e2ngulo de lados 20 cm e 30 cm. Considere a acelera\u00e7\u00e3o da gravidade local igual a 10 m s<sup>\u22122<\/sup> e a press\u00e3o atmosf\u00e9rica de 105 Pa. O menor n\u00famero de pneus em contato com o solo que o caminh\u00e3o dever\u00e1 usar \u00e9&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A) 4.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">B) 6.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C) 8.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">D) 10.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">E) 12.<\/p>\n\n\n\n<p class=\"has-text-align-center has-large-font-size wp-block-paragraph\"><strong>Solu\u00e7\u00e3o<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A press\u00e3o P \u00e9 dada por:<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"117\" height=\"50\" data-src=\"https:\/\/xequematenem.com.br\/blog\/wp-content\/uploads\/2024\/09\/image-462.png\" alt=\"\" class=\"wp-image-16595 lazyload\" title=\"\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 117px; --smush-placeholder-aspect-ratio: 117\/50;\"><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Em que F \u00e9 a for\u00e7a peso e A \u00e9 a \u00e1rea em contato com o ch\u00e3o. A for\u00e7a peso do caminh\u00e3o \u00e9 dada pela sua massa total de 8 toneladas (caminh\u00e3o mais carga), que corresponde a 8 000 kg, vezes a acelera\u00e7\u00e3o g da gravidade:<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"90\" height=\"32\" data-src=\"https:\/\/xequematenem.com.br\/blog\/wp-content\/uploads\/2024\/09\/image-463.png\" alt=\"\" class=\"wp-image-16596 lazyload\" title=\"\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 90px; --smush-placeholder-aspect-ratio: 90\/32;\"><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">A \u00e1rea total A<sub>T<\/sub> \u00e9 a soma de todas as \u00e1reasA<sub>p<\/sub> de cada um dos pneus de lado 0,2 m e 0,3 m.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"110\" height=\"31\" data-src=\"https:\/\/xequematenem.com.br\/blog\/wp-content\/uploads\/2024\/09\/image-464.png\" alt=\"\" class=\"wp-image-16597 lazyload\" title=\"\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 110px; --smush-placeholder-aspect-ratio: 110\/31;\"><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Sendo N o n\u00famero de pneus. Substituindo a For\u00e7a e a \u00c1rea na equa\u00e7\u00e3o da press\u00e3o, temos:<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"90\" height=\"47\" data-src=\"https:\/\/xequematenem.com.br\/blog\/wp-content\/uploads\/2024\/09\/image-465.png\" alt=\"\" class=\"wp-image-16600 lazyload\" title=\"\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 90px; --smush-placeholder-aspect-ratio: 90\/47;\"><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Segundo o enunciado, a press\u00e3o P tem que ser menor que duas vezes a press\u00e3o atmosf\u00e9rica<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"123\" height=\"107\" data-src=\"https:\/\/xequematenem.com.br\/blog\/wp-content\/uploads\/2024\/09\/image-466.png\" alt=\"\" class=\"wp-image-16601 lazyload\" title=\"\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 123px; --smush-placeholder-aspect-ratio: 123\/107;\"><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Isolando o N:<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"177\" height=\"276\" data-src=\"https:\/\/xequematenem.com.br\/blog\/wp-content\/uploads\/2024\/09\/image-467.png\" alt=\"\" class=\"wp-image-16602 lazyload\" title=\"\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 177px; --smush-placeholder-aspect-ratio: 177\/276;\"><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">O n\u00famero de pneus deve ser um inteiro par, como o enunciado alerta, e maior que 6,67, como conclu\u00edmos. Sendo assim, ao menos 8 pneus seriam necess\u00e1rios.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Alternativa C<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Um caminh\u00e3o de massa 5 toneladas, carregado com carga de 3 toneladas, tem eixos articulados que permitem fazer o uso de 4 a 12 pneus (aos pares) simultaneamente. O n\u00famero de pneus em contato com o solo \u00e9 determinado a fim de que a press\u00e3o exercida por cada pneu contra o solo n\u00e3o supere o [&hellip;]<\/p>\n","protected":false},"author":11,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[87,99],"tags":[],"area-do-conhecimento":[116,121],"assunto":[],"class_list":["post-16594","post","type-post","status-publish","format-standard","hentry","category-questoes-ppl","category-2020-questoes-ppl","area-do-conhecimento-ciencias-da-natureza-e-suas-tecnologias","area-do-conhecimento-fisica"],"_links":{"self":[{"href":"https:\/\/xequematenem.com.br\/blog\/wp-json\/wp\/v2\/posts\/16594","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/xequematenem.com.br\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/xequematenem.com.br\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/xequematenem.com.br\/blog\/wp-json\/wp\/v2\/users\/11"}],"replies":[{"embeddable":true,"href":"https:\/\/xequematenem.com.br\/blog\/wp-json\/wp\/v2\/comments?post=16594"}],"version-history":[{"count":1,"href":"https:\/\/xequematenem.com.br\/blog\/wp-json\/wp\/v2\/posts\/16594\/revisions"}],"predecessor-version":[{"id":16605,"href":"https:\/\/xequematenem.com.br\/blog\/wp-json\/wp\/v2\/posts\/16594\/revisions\/16605"}],"wp:attachment":[{"href":"https:\/\/xequematenem.com.br\/blog\/wp-json\/wp\/v2\/media?parent=16594"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/xequematenem.com.br\/blog\/wp-json\/wp\/v2\/categories?post=16594"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/xequematenem.com.br\/blog\/wp-json\/wp\/v2\/tags?post=16594"},{"taxonomy":"area-do-conhecimento","embeddable":true,"href":"https:\/\/xequematenem.com.br\/blog\/wp-json\/wp\/v2\/area-do-conhecimento?post=16594"},{"taxonomy":"assunto","embeddable":true,"href":"https:\/\/xequematenem.com.br\/blog\/wp-json\/wp\/v2\/assunto?post=16594"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}