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3 years ago

5

How does a single fixed pulley, like the one seen here, help you do work?

2 answers:

AlexFokin [52]3 years ago

3 0

The correct answer is A.

grigory [225]3 years ago

3 0

Answer:

Explanation:changes the way of the force a

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Un objeto que tiene como masa 80 kg acelera a razón de 10 m/s2 ¿que fuerza lo impulzo

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3 years ago

A block is projected up a frictionless inclined plane with initial speed v0 = 1.72 m/s. The angle of incline is θ = 44.8°. (a) H

Snowcat [4.5K]

Explanation:

Given

initial velocity(v_0)=1.72 m/s

$\theta =44.8{\circ}$

using $v^2-u^2=2as$

Where v=final velocity (Here v=0)

u=initial velocity(1.72 m/s)

a=acceleration $(gsin\theta )$

s=distance traveled

$0-(1.72)^2=2(-9.81\times sin(44.8))s$

s=0.214 m

(b)time taken to travel 0.214 m

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$0=1.72-gsin(44.8)\times t$

$t=\frac{1.72}{9.8\times sin(44.8)}$

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(c)Speed of the block at bottom

$v^2-u^2=2as$

Here u=0 as it started coming downward

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