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UNO [17]
4 years ago
15

Lien uses a spring scale to pull a block toward the right across the lab table. The scale reads 8 N. Which force should Lien con

clude is also 8 N?
Physics
2 answers:
pashok25 [27]4 years ago
6 0
The force to the left of the block on the spring scale
Alja [10]4 years ago
5 0

Answer

The force on the left across the lab table.

Explanation

The Newton's third law of motion states that; <em>action and reaction are equal but a ct in opposite direction. </em>

When the block of is pulled on the right with a force of X Newtons then there is a force -X Newtons applying and equal force on the left. For every action there must be a reaction with is equal and applying in the opposite direction.

So, if the block is pulled on the right by a force of 8 N there is another equal force applying on the left.


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now if an object is dropped from it then time taken by object to drop on ground will be given as

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A disk rotates about its central axis starting from rest and accelerates with constant angular acceleration. At one time it is r
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Answer:

Explanation:

Given that,

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ωo=0rad/s

It has angular velocity of 11rev/sec

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wi=22πrad/sec

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Final angular velocity is

ωf=18rev/sec

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ωf=36πrad/sec

a. Angular acceleration(α)

Then, angular acceleration is given as

wf²=wi²+2αθ

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(36π)²-(22π)²=120πα

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α=8014.119/120π

α=21.26 rad/s²

Let. convert to revolution /sec²

α=21.26/2π

α=3.38rev/sec

b. Time Taken to complete 30revolution

θ=60πrad

∆θ= ½(wf+wi)•t

60π=½(36π+22π)t

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22π=0+21.26t

22π=21.26t

Then, t=22π/21.26

t=3.251seconds

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∆θ= ½(wf+wo)•t

∆θ= ½(0+11)•3.251

∆θ= ½(11)•3.251

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