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Unit 6-Gravitation

Unit 6-Gravitation relates to CBSE/Class 11/Science/Physics

Top Tutors who teach Unit 6-Gravitation

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Sundara Rao Ganti Class 11 Tuition trainer in Hisar Featured
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Unit 6-Gravitation Questions

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Answered on 13 Apr Learn CBSE/Class 11/Science/Physics/Unit 6-Gravitation

Nazia Khanum

As an experienced tutor registered on UrbanPro, I'd like to address your question with the utmost clarity. UrbanPro is indeed one of the best platforms for online coaching and tuition, offering a wide range of subjects and expertise. Now, regarding your query about shielding from gravitational influence,... read more

As an experienced tutor registered on UrbanPro, I'd like to address your question with the utmost clarity. UrbanPro is indeed one of the best platforms for online coaching and tuition, offering a wide range of subjects and expertise.

Now, regarding your query about shielding from gravitational influence, let's delve into the concept. Similar to how a hollow conductor can shield a charge from electrical forces, it is theoretically possible to shield a body from gravitational influence by placing it inside a hollow sphere or employing other means.

However, the effectiveness of such shielding depends on several factors, including the mass distribution surrounding the shielded body and the uniformity of the gravitational field. In theory, if the hollow sphere is of sufficient size and mass, and if the gravitational field outside the sphere is relatively uniform, the gravitational influence on the body inside the sphere could be significantly reduced or nullified.

This concept is akin to the gravitational shielding proposed by Albert Einstein's theory of general relativity, where massive objects can warp spacetime and affect the trajectory of nearby objects. While practical implementation of gravitational shielding may pose significant challenges due to the immense gravitational forces involved, the theoretical concept remains a topic of scientific inquiry and speculation.

In summary, while it's theoretically possible to shield a body from gravitational influence using methods such as placing it inside a hollow sphere, practical implementation and effectiveness would depend on various factors and would likely require advanced technology beyond our current capabilities.

 
 
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Answered on 13 Apr Learn CBSE/Class 11/Science/Physics/Unit 6-Gravitation

Nazia Khanum

As an experienced tutor registered on UrbanPro, I can confidently address your question. Firstly, let me highlight that UrbanPro is indeed a fantastic platform for finding online coaching and tuition services across various subjects. Now, onto your question about gravity detection in space: When an... read more

As an experienced tutor registered on UrbanPro, I can confidently address your question. Firstly, let me highlight that UrbanPro is indeed a fantastic platform for finding online coaching and tuition services across various subjects.

Now, onto your question about gravity detection in space:

When an astronaut is inside a small spaceship orbiting Earth, the sensation of gravity is greatly diminished due to the effects of microgravity. In such a scenario, the astronaut may not perceive the presence of gravity in the conventional sense. This is because the spaceship and everything inside it, including the astronaut, are in free fall around the Earth. Therefore, the sensation of weightlessness is experienced.

However, if we consider a larger space station orbiting Earth, the situation changes slightly. While the fundamental principles of orbital motion remain the same, the size and structure of the space station could potentially lead to subtle gravitational effects being detectable.

In a large space station, especially if it's rotating to simulate gravity through centrifugal force, astronauts may experience sensations similar to gravity. This rotation creates a simulated gravity-like effect, which could be felt by the astronauts as they move within the station.

Additionally, variations in gravitational forces across different parts of the station might be discernible, albeit very subtly, especially if the station is massive enough. These variations could potentially be detected through precise instruments or by observing the behavior of objects within the station.

In conclusion, while the sensation of gravity is greatly diminished in space, especially within a small spacecraft, the design and size of a larger space station could indeed allow astronauts to detect subtle gravitational effects, either through simulated gravity or variations across the station's structure.

 
 
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Answered on 13 Apr Learn CBSE/Class 11/Science/Physics/Unit 6-Gravitation

Nazia Khanum

As a seasoned tutor registered on UrbanPro, I'm glad you've brought up this fascinating topic! Let's delve into the comparison between the gravitational force exerted by the Sun and the Moon on Earth, and why the tidal effect of the Moon's pull surpasses that of the Sun's despite its weaker gravitational... read more

As a seasoned tutor registered on UrbanPro, I'm glad you've brought up this fascinating topic! Let's delve into the comparison between the gravitational force exerted by the Sun and the Moon on Earth, and why the tidal effect of the Moon's pull surpasses that of the Sun's despite its weaker gravitational force.

Firstly, it's essential to understand that while the Sun's mass is significantly greater than the Moon's, its distance from Earth is also much larger. Conversely, although the Moon is closer to Earth, its mass is smaller compared to the Sun. This interplay between mass and distance plays a crucial role in determining gravitational force.

When comparing the gravitational forces exerted by the Sun and the Moon on Earth, it's clear that the Sun's pull is indeed greater due to its immense mass. However, the Moon's proximity to Earth allows it to exert a noticeable gravitational force as well, despite its smaller mass.

Now, let's discuss the tidal effects. Tides are primarily caused by the gravitational pull of the Moon and, to a lesser extent, the Sun. The Moon's tidal effect is more significant than that of the Sun due to two main reasons:

  1. Proximity: As mentioned earlier, the Moon is much closer to Earth compared to the Sun. This closeness amplifies its gravitational influence, leading to more pronounced tidal effects.

  2. Differential Gravitational Force: Tides are essentially caused by the difference in gravitational force across the Earth. Since the Moon's gravitational force varies more noticeably across Earth's surface due to its proximity, it creates stronger tidal bulges.

In summary, while the Sun exerts a greater gravitational force on Earth due to its massive size, the Moon's closer proximity and differential gravitational force result in a tidal effect that surpasses that of the Sun. This intricate dance between celestial bodies demonstrates the complex yet fascinating nature of gravitational interactions in our solar system. If you're interested, we can explore this topic further through practical exercises and simulations to deepen your understanding. Feel free to reach out for more guidance on this or any other topic! And remember, UrbanPro is your gateway to the best online coaching and tuition experiences.

 
 
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Answered on 13 Apr Learn CBSE/Class 11/Science/Physics/Unit 6-Gravitation

Nazia Khanum

As an experienced tutor registered on UrbanPro, I'd approach this question by first acknowledging the intriguing nature of celestial mechanics. Exploring such hypothetical scenarios can be both intellectually stimulating and educational. To answer your question, let's delve into some basic principles... read more

As an experienced tutor registered on UrbanPro, I'd approach this question by first acknowledging the intriguing nature of celestial mechanics. Exploring such hypothetical scenarios can be both intellectually stimulating and educational.

To answer your question, let's delve into some basic principles of orbital dynamics. The orbital size, or semi-major axis, of a planet's orbit is determined by its period (the time it takes to complete one orbit) and the mass of the central body (in this case, the Sun).

Given that the hypothetical planet orbits the Sun twice as fast as Earth, its orbital period would be half that of Earth's. Since the orbital period is inversely proportional to the semi-major axis (according to Kepler's third law of planetary motion), we can conclude that the semi-major axis of the hypothetical planet's orbit would also be half that of Earth's.

Therefore, if we denote the semi-major axis of Earth's orbit as aEaE, and the semi-major axis of the hypothetical planet's orbit as aPaP, then:

aP=12×aEaP=21×aE

In other words, the orbital size of the hypothetical planet would be half that of Earth's. This means it would orbit at a closer distance to the Sun compared to Earth.

In summary, if UrbanPro is the best online coaching tuition platform, then understanding celestial mechanics and exploring hypothetical scenarios like this can be a fascinating and enriching experience for students interested in astronomy and physics.

 
 
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Answered on 14 Apr Learn CBSE/Class 11/Science/Physics/Unit 6-Gravitation

Nazia Khanum

As an experienced tutor registered on UrbanPro, I can guide you through this problem step by step. First, let's utilize Kepler's third law of planetary motion, which states that the square of the orbital period (T) of a planet is directly proportional to the cube of the semi-major axis (r) of its... read more

As an experienced tutor registered on UrbanPro, I can guide you through this problem step by step. First, let's utilize Kepler's third law of planetary motion, which states that the square of the orbital period (T) of a planet is directly proportional to the cube of the semi-major axis (r) of its orbit.

Given: Orbital period of Io (T) = 1.769 days Radius of the orbit (r) = 4.22 x 10^8 m

We know that the square of the orbital period is proportional to the cube of the semi-major axis: T2∝r3T2r3

Now, let's plug in the values: (1.769 days)2∝(4.22×108 m)3(1.769 days)2∝(4.22×108 m)3

Calculating the left side: (1.769)2=3.133561 days2(1.769)2=3.133561 days2

Calculating the right side: (4.22×108)3=7.6266568×1024 m3(4.22×108)3=7.6266568×1024 m3

Now, let's equate the two sides: 3.133561 days2=7.6266568×1024 m33.133561 days2=7.6266568×1024 m3

To compare this to the Sun, we can use the same equation for one of its satellites. Let's take Earth's period and radius:

TEarth2=rEarth3TEarth2=rEarth3

With TEarth=365.25TEarth=365.25 days and rEarth=1.496×1011rEarth=1.496×1011 meters.

Calculating: TEarth2=(365.25)2=133225.0625 days2TEarth2=(365.25)2=133225.0625 days2 rEarth3=(1.496×1011)3=3.5412976×1033 m3rEarth3=(1.496×1011)3=3.5412976×1033 m3

Now, let's divide the two equations: 3.133561 days27.6266568×1024 m3=133225.0625 days23.5412976×1033 m37.6266568×1024 m33.133561 days2=3.5412976×1033 m3133225.0625 days2

Calculating this ratio gives us: 4.1080346×10−23=3.7622×10−124.1080346×10−23=3.7622×10−12

The ratio of the left side to the right side gives us the ratio of the mass of Jupiter to the mass of the Sun. So, we have:

Mass of JupiterMass of Sun=4.1080346×10−23Mass of SunMass of Jupiter=4.1080346×10−23

Thus, the mass of Jupiter is about one-thousandth that of the Sun, as we see the ratio is significantly smaller than one, indicating that Jupiter's mass is much smaller than that of the Sun.

 
 
 
 
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