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2 years ago

Is the work done by tension positive, negative, or zero? explain.

SAT

1 answer:

Oksana_A [137]2 years ago

6 0

The workdone by the tension is; Positive

<h3>What is Tension force?</h3>

This question is from an elevator that is held by a single cable which is ascending but slowing down.

Now, this elevator is being acted upon by two vertical forces known as Tension which is upwards and the weight of the elevator acting downwards.

However, the direction of motion of the elevator is in the same direction as the tension in the cable. Thus, we can say that the work done by tension is positive.

Read more about Cable Tension at; brainly.com/question/26270116

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Answer: First Choice

Explanation:

Like Sancho, Cugoano demonstrates that he had a difficult beginning as an enslaved person, but then prevailed through luck and perseverance.

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3 years ago

A pendulum is made by tying a 75 g ball to a 130-cm-long string. the ball is pulled 5.0∘ to the side and released.

Maslowich

The ball’s speed and direction at the lowest point of trajectory are; 3.1 m/s and swing to the same angle on the other side

<h3>What is the speed at the lowest point?</h3>

We will assume that all of the motion will transfer to Kinetic Energy at the lowest point. Now, the difference in height will be;

Δh = (130 – 130*cos °5) = 0.49 cm

The change in PE is;

ΔP.E = mgΔh

ΔP.E = 9.8m/s² × 0.75kg × 0.049 m

ΔP.E = 0.36015 J

Formula for kinetic energy is;

K.E = ¹/₂*m*v²

From conservation of energy;

K.E = P.E

Thus;

¹/₂* 0.075 * v² = 0.36015

v = √[(0.36015 * 2)/0.075]

v = 3.1 m/s

Thus, the pendulum will swing to the same angle on the other side.

Read more about Speed of Pendulum at; brainly.com/question/17054952

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2 years ago

The diagram above can be completed with an increase in the membership and political power of which group? the populist party the

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The diagram in the image attached below can be completed with an <u>increase</u> in the membership and political power of: C. the congress of racial equality.

Migration refers to the movement of a group of people from one geographical region (location) to another geographical destination, in search of better social amenities, living conditions, and work.

In the United States of America, there was an increase (rise) racial tension due to the following:

Migration of African-Americans to cities.

Rise of nativism and religious fundamentalism among the people.

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2 years ago