holypizza25 holypizza25

15-09-2021
Physics

contestada

What effort force must be applied to lift an 864 N load with a fixed pulley?

A.432 N
B.864 N
C.1728N
D.3456N

Respuesta :

Alexanders1123 Alexanders1123

15-09-2021

Answer:

864N (B)

Explanation:

Using newtons first law of motion: ∑F = 0

F(gravity) - F(applied) = 0

F(gravity) = F(applied) = 864N

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