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ra1l [238]
3 years ago
11

Draw the net force arrow on the picture to the left.

Physics
1 answer:
valkas [14]3 years ago
7 0

Answer:

The answer to your question is: Net force = 0 N; There is no direction because there in no force.

Explanation:

Net force = 7 N - 4 N - 3 N

               = 0N

There is no direction, because there is no force.

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μ =tanθ

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μ=tanθ

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A wheel, starting from rest, rotates with a constant angular acceleration of 1.80 rad/s^2. During a certain 7.00 s interval, it
lora16 [44]

Answer:

a) 1.3 rad/s

b) 0.722 s

Explanation:

Given

Initial velocity, ω = 0 rad/s

Angular acceleration of the wheel, α = 1.8 rad/s²

using equations of angular motion, we have

θ2 - θ1 = ω(0)[t2 - t1] + 1/2α(t2 - t1)²

where

θ2 - θ1 = 53.2 rad

t2 - t1 = 7s

substituting these in the equation, we have

θ2 - θ1 = ω(0)[t2 - t1] + 1/2α(t2 - t1)²

53.2 =ω(0) * 7 + 1/2 * 1.8 * 7²

53.2 = 7.ω(0) + 1/2 * 1.8 * 49

53.2 = 7.ω(0) + 44.1

7.ω(0) = 53.2 - 44.1

ω(0) = 9.1 / 7

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ω(0) = ω(i) + α*t1

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t1 = 1.3/1.8

t1 = 0.722 s

5 0
3 years ago
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