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Leni [432]
3 years ago
11

"A pendulum is pulled back from its equilibrium (center) position and then released. When the pendulum bob is halfway between th

e high point and the low point in its swing, is the total energy kinetic energy, potential energy, or both
Physics
1 answer:
kumpel [21]3 years ago
3 0

Answer:

Option C, The total energy consists of half the original potential energy and half of the original potential energy converted to kinetic energy.

Explanation:

Complete question

A pendulum is pulled back from its equilibrium (center) position and then released. When the pendulum bob is halfway between the high point and the low point in its swing, is the total energy kinetic energy, potential energy, or both? Explain.

The total energy is kinetic energy only.

The total energy is potential energy only.

The total energy consists of half the original potential energy and half of the original potential energy converted to kinetic energy.

The total energy consists of one-fourth the original potential energy and three-fourths of the original potential energy converted to kinetic energy.

Solution

Total energy is the sum of kinetic energy and potential energy and as a pendulum moves back and forth, there is continuous transformation of energy from one form to the other form. i.e from kinetic energy to potential energy and vice versa.  

When the pendulum is released from some position, the potential energy  in it start converting into kinetic energy with the increase in speed of motion of pendulum bob

Hence, option C is correct

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Answer:

It gets attracted

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Materials that attracts magnet gets attracted to the magnet at both the North and South Pole. This can be compared to how neutral objects also gets attracted to the positively and negatively charged rod through the force of polarisation.

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A 2kg water balloon is flying at a rate of 4m/s^2. With what force will it hit its target?
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Explanation:

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Lila is a track and field athlete. She must complete four laps around a circular track. The track itself is a 400 meter track an
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Answer:

Her speed is 1.1 m/s, and her velocity is 0 m/s

Explanation:

Speed = Distance covered/Time

Given

Distance = 400m

Time = 6minutes = 6*60 = 360 secs

Substitute the given parameter into the formula;

Speed = 400/360

Speed = 1.1m/s

Since the track is a circular track, the displacement will be zero. She is only moving in a circular path (no direction)

Velocity = Displacement/Time

Velocity = 0/3600

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Hence her speed is 1.1 m/s, and her velocity is 0 m/s

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A discovery not the others
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Which of the following is NOT a property of long-period comets that suggests that they originate from the Oort cloud?
Lesechka [4]

Answer:

b. They orbit around the Sun in a counterclockwise direction, when viewed from above the ecliptic plane.

Explanation:

All the objects of the solar system revolve around the Sun in a counterclockwise direction. The comet coming from the Oort's cloud will also follow the same kind of orbit. That is why it can't be a property to distinguish an Oort's cloud comet.

All other properties are correct to identify an Oort's cloud comet as the Oort's cloud is a considered a spherical cloud just outside the Solar system.

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