Chapter 8- Rotation

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Question 1 of 1

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What is the rotational speed of the hand on a clock that measures the minutes?

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A figure skater is spinning with her arms held straight out. The rotational speed of her fingertips is

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Despite rules to the contrary, a child stands up in the seat of a moving swing. At the moment the swing is at its low point, the rotational speed of the child’s feet is

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You are looking from the side at a Ferris wheel and observe that it is rotating clockwise. The direction of the rotational velocity of the Ferris wheel is

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The rotational speed of the Earth is slowing because of the tidal influences of the Sun and the Moon. The angular velocity vector of the Earth

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If a phonograph turntable takes 2 s to reach its rotational speed of 45 rpm, what is its average acceleration?

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If the wheel on a car accelerates from rest at a constant rate of 1.5 rev/s2, how fast will it be turning after 3 s?

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A change in the rotational velocity of an object is produced by a net

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Newton's first law for rotational motion states that an object will maintain its state of rotational motion unless acted on by an unbalanced (or net)

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Newton's first and second laws for translational motion refer to the net force acting on an object. What is the rotational analog of this force?

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What kind of motion does a constant, non-zero torque produce on an object mounted on an axle?

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If a ball with a weight of 30 N hangs from the end of a 1.5-m horizontal pole, what torque is produced?

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The rectangular board in the figure below is fixed but free to rotate about point P. Forces of equal magnitude are applied to the board at the locations shown in Cases 1-4. 1- pointing up and farther from the center 2- pointing up and closer to the center 3- pointing to the left and is under the center 4-pointing to the left and at the same level as the center Refer to Exhibit 8-2. In which case is the magnitude of the torque on the board the greatest?

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A meter stick is balanced on a stand. If you place a 50-g mass on one side at a distance of 20 cm from the center, how far from the center would you place a 25-g mass on the other side so that the system balances?

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Two children with masses of 20 and 30 kg are sitting on a balanced seesaw. If the lighter child is sitting 3 m from the center, how far from the center is the heavier child sitting?

Chapter 8- Rotation

Question 1 of 1

Time Left

What is the rotational speed of the hand on a clock that measures the minutes?

Select the correct answer(s).

(0/0)

A figure skater is spinning with her arms held straight out. The rotational speed of her fingertips is

Select the correct answer(s).

(0/0)

Despite rules to the contrary, a child stands up in the seat of a moving swing. At the moment the swing is at its low point, the rotational speed of the child’s feet is

Select the correct answer(s).

(0/0)

You are looking from the side at a Ferris wheel and observe that it is rotating clockwise. The direction of the rotational velocity of the Ferris wheel is

Select the correct answer(s).

(0/0)

The rotational speed of the Earth is slowing because of the tidal influences of the Sun and the Moon. The angular velocity vector of the Earth

Select the correct answer(s).

(0/0)

If a phonograph turntable takes 2 s to reach its rotational speed of 45 rpm, what is its average acceleration?

Select the correct answer(s).

(0/0)

If the wheel on a car accelerates from rest at a constant rate of 1.5 rev/s2, how fast will it be turning after 3 s?

Select the correct answer(s).

(0/0)

A change in the rotational velocity of an object is produced by a net

Select the correct answer(s).

(0/0)

Newton's first law for rotational motion states that an object will maintain its state of rotational motion unless acted on by an unbalanced (or net)

Select the correct answer(s).

(0/0)

Newton's first and second laws for translational motion refer to the net force acting on an object. What is the rotational analog of this force?

Select the correct answer(s).

(0/0)

What kind of motion does a constant, non-zero torque produce on an object mounted on an axle?

Select the correct answer(s).

(0/0)

If a ball with a weight of 30 N hangs from the end of a 1.5-m horizontal pole, what torque is produced?

Select the correct answer(s).

(0/0)

Select the correct answer(s).

(0/0)

A meter stick is balanced on a stand. If you place a 50-g mass on one side at a distance of 20 cm from the center, how far from the center would you place a 25-g mass on the other side so that the system balances?

Select the correct answer(s).

(0/0)

Two children with masses of 20 and 30 kg are sitting on a balanced seesaw. If the lighter child is sitting 3 m from the center, how far from the center is the heavier child sitting?

Select the correct answer(s).

(0/0)

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