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algol13
3 years ago
11

Leonardo da Vinci (1452-1519) is credited with being the first to perform quantitative experiments on friction, though his resul

ts weren't known until centuries later, due in part to the secret code (mirror writing) he used in his notebooks. Leonardo would place a block of wood on an inclined plane and measure the angle at which the block begins to slide. He reports that the coefficient of static friction was 0.22 his experiments.
At what angle did Leonardo’s blocks begin to slide?
Physics
2 answers:
Natalka [10]3 years ago
6 0

Answer:

Pog

Explanation:

Harrizon [31]3 years ago
6 0

Answer:

θ = 12.4° from horizontal

Explanation:

μ = F parallel / F Normal = mgsinθ / mgcosθ = tanθ

0.22 = tanθ

θ = 12.407418...

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Answer:

La velocidad con la que se debe lanzar el trineo es aproximadamente 9.96 m/s

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El trabajo realizado sobre la fricción, W_f ≈ 20.4 Julios

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El trabajo realizado para levantar el trineo a 4 metros de altura, P.E. ≈ 78.48 Joules

El trabajo total requerido para levantar el trineo 4 metros por la rampa, W_t = W_f + P.E.

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Energía cinética, K.E. = 1/2 × m × v²

La energía cinética necesaria para mover el trineo por la rampa, K.E. se da de la siguiente manera;

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La velocidad con la que se debe lanzar el trineo para que ascienda 4 metros por la rampa, v ≈ 9.96 m/s

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