Física Flashcards

1
Q

Qual é a fórmula do trabalho ?

A

T = |F| . |d| . cos ângulo

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2
Q

Cos 0 graus

A

1

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3
Q

Cos 180

A

-1

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4
Q

Cos 90

A

0

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5
Q

Quando o trabalho será nulo?

A

Quando a força for nula
Quando não houver deslocamento
Quando a força for perpendicular ao deslocamento ex. 90°

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6
Q

Quando o trabalho é positivo chama-se …..

A

Trabalho motor

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7
Q

Quando o trabalho for negativo chama-se…

A

Trabalho resistente

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8
Q

Quando o ângulo entre a força e o deslocamento for __________ o trabalho será resistente

A

Obtuso

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9
Q

Quando o ângulo entre a força e o deslocamento for __________ o trabalho será Motor

A

Agudo

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10
Q

Formulá Trabalho Força Peso

A

T = |P| . H

T = m.g.H

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11
Q

Formula do trabalho da força elástica

A

T = k.x2/2

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12
Q

Formula da energia cinética

A

Ecin = m.g.h
( J )

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