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3&T.

SARIYAN SADEMYHUR

2. Arafah Tecandu (Newton's Law of Gravitation

F=\frac{Gm_1m_2} {r^2}

SHRIYANSH ACADEMY RAHURI ardan arganian JUNGRIAN AAYAna Brà.

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• 3. Aldian Tecalho farin (G)
• 6.67 \times 10^{-11};Nm^2/kg^2
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• 4. Tofu (g)
• g=9.8;m/s^2
• 5. (Mass)
• SI 1 = kg
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• W=mg
• SI Newton (N)
• arghin a audicia geh
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• Newton
• 7. ч¶ (Fr ee Fall)
• v=u+gt s=ut+\frac{1}{2}gt^2\
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• Baier Gird
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12. A 344

13.чa (Escape Velocity)

gealan gecanadunda anak devenenat atakua faut àu.

• 11.2 km/s
• 14. Toca|du||7 3447
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• (W=mg)
• (g=9.8m/s^2)
• (v=u+gt)
• (s-ut+\frac12gt^2)
• (v^2=u^2+2gs)
• 1. Tecalichofur thulo Hu?
• 4. Khuda Tua ?
• 5. Tocafu carut TguGHT?
• 6.67 × 10-¹¹ Nm²/kg²
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g = 9.8 m/s²

G = 6.67 × 10-¹¹1 Nm²/kg² Weight = mg

Escape Velocity = 11.2 km/s SI Unit of Weight = Newton

• SI Unit of Mass = kg
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guat ? • af fagid a jasno mu−?

Acheur ? : Tecalichofu

HETTÀ DA I BAT (SSC Board Exam)

• BAR:
• BAR:
• VANSH ACA
• F=\frac{Gm_1m_2} {r^2}
• : 9.8 m/s²
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• MYHURK
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W = mg

E. arghia and qua aidia ura fat.

• deg419
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• Newton
• V. Yhydd Buy HT?
• : 11.2 km/s
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• BAR:
• GPS
• R&TT
• ??. UGH?

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Gil Buue yeanziladi 28 aruia ya gefgun qui axean enfu qeatzen fruuntzu faàà faraì, ZION FRER BLUE Zvidid.

• PR.G?
• BAR:
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2. g à yeu ad foruĤ aula auð. Þrû FEET.

BER:

3 guià

MODEMY RAHURI and arched engdur an zuà. Z an zizan argundian gunSRIZAN AAYANA I NIRI AKG Jauna Bruð.

• F=\frac {Gm_1m_2} {r^2}
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BAR:

v=u+gt s=ut+\frac12gt^2 v^2=u^2+2gs

3. Yhuda thug hu? zuzi azigra fagi.

• NANS ADEMY RAHURI
• 2. g à you fandt ¾?
• A) 10 B) 9.8 m/s² ✅
• C) 8.9
• D) 11.2
• 3. qualà SI yah?

SHRIYANSH ACADEMY RAHURI qırair faqirà GTY MCQS

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• B) Newton✅
• C) Joule
• D) Watt
• A) 9.8 km/s
• B) 11.2 km/s
• C) 7.9 km/s
• D) 10 km/s
• Tocanadunan fach EYE ART.
• aud aidia na ful.

3. Yayda Fuy her? zuen auferu fagt.

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• Science & Technology Part 1
• Chapter 1: Gravitation
• 1. Gravitation
• Examples:
• An apple falls to the ground.

The Moon revolves around the Earth. The Earth revolves around the Sun.

2. Newton's Universal Law of Gravitation

HRYANS CADEMY RAHURI

Gravitation is the force of attraction between any two objects in the universe.

Statement:

Every object in the universe attracts every other object with a force that:

is directly proportional to the product of their masses.

is inversely proportional to the square of the distance between their centres.

• Formula
• F=\frac{Gm_lm
• F Gravitational force (N)

• G = Universal Gravitational Constant mi, m2 = Masses of the two bodies

• r = Distance between their centres

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• Value:
• 6.67 \times 10^{-11} ; Nm^2/kg^2
• 4. Acceleration Due to Gravity (g)
• due to gravity.
• Value:
• g = 9.8;m/s^2
• 5. Mass

SVANS ACADEMY RAURY

The acceleration produced in a freely falling body due to Earth's gravity is called acceleration

Amount of matter in a body. Remains constant everywhere. SI Unit: kilogram (kg)

6. Weight vitational force acting on an object.

• W = mg
• Where:
• W = Weight (N)
• m = Mass (kg)
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• g = 9.8 m/s²
• Difference Between Mass and Weight
• Weight
• Mass
• Amount of matter
• Gravitational force
• Constant everywhere
• Changes with gravity
• SI Unit: kg
• SI Unit: Newton (N)

Measured by beam balance Measured by spring balance

7. Free Fall

When a body falls only under the influence of gravity, it is 8. Equations of Motion for Free Fall

SHRIYANSH ACADE RAHURI v=u+gt s=ut+\frac12gt^2 v^2=u^2+2gs u = Initial velocity v = Final velocity g = 9.8 m/s² t = Time s = Distance

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An artificial satellite is a man-made object placed in orbit around the Earth.

• Uses
• Weather forecasting Communication
• Television broadcasting GPS and navigation
• Scientific research
• Defence
• 10. Natural Satellite

A naturally occurring body that revolves around a planet.

• Example: Moon (Earth's natural satellite)
• SHRIVAL ACADEMY RAHURI
• 11. Geostationary Satellite
• A satellite that:

• revolves around the Earth in 24 hours. moves in the direction of Earth's rotation. appears stationary relative to the Earth.

• 12. Escape
• 11.2 km/s
• 13. Applications of Gravitation
• Keeps planets in orbit.

SHRIYANSH ACADEMY RAHURI velocity required for an object to escape Earth's gravitational pull.

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Keeps the Moon around the Earth. Causes tides.

• Causes rainfall.
• Keeps us on the Earth's surface.
• Important Formulae
• Formula
• Use
• (F=\frac{Gm_1m_2}{r^2}) Gravitational force
• (W=mg)
• Weight
• Acceleration due to gravity
• (g=9.8m/s^2)
• (v=u+gt)
• Velocity
• (s=ut+\frac12gt^2)
• Distance
• Motion equation
• (v^2=u^2+2gs)
• Important Viva/Exam Questions
• 1. Define gravitation.

2. State Newton's Universal Law of Gravitation.

3. What is acceleration due to gravity?

• 4. Define mass and weight.
• 5. Differentiate between mass and weight.
• 6. What is free fall?
• 7. What is escape velocity?
• 8. Define an artificial satellite.

9. What are the uses of artificial satellites? 10. What is a geostationary satellite?

One-Mark Important Points g = 9.8 m/s²

• G = 6.67 × 10-¹¹ Nm²/kg²
• Weight = mg
• Escape velocity = 11.2 km/s
• SI unit of Mass = kg

SI unit of Weight = Newton (N)

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• Earth's natural satellite: Moon
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Class 10 Science & Technology Part 1

Answer:

Chapter 1: Gravitation - Important Questions and Answers

1. What is gravitation?

Gravitation is the force of attraction between any two objects in the univers

2. State Newton's Universal Law of Gravitation.

• ENVANSHADEHUR
• Answer:
• Formula:
• F=\frac{Gm_1m_2} {r^2]

Every object in the universe attracts every other object with a force that is:

directly proportional to the product of their masses, and inversely proportional to the square of the distance between their centres.

3. What is the Universal Gravitational Constant (G)?

Answer:

The Universal Gravitational Constant (G) is the constant used in Newton's law of gravitation.

• Value: [
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4. What is acceleration due to gravity?

• Answer:
• Value: 9.8 m/s²
• 5. Define mass.
• Answer:

Mass is the amount of matter present in an object.

SI Unit: kilogram (kg)

RIYANACADEMY RAHU

The acceleration produced in a freely falling object due to the Earth's gravitational force acceleration due to gravity (g).

• 6. Define weight.
• Answer:
• Formula:
• W = mg

Weight is the gravitational force exerted by the Earth on an object.

• 7. Differentiate between mass and weight.
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• Mass
• Weight
• Gravitational force acting on the body
• Amount of matter in a body
• Changes from place to place
• Constant everywhere
• SI Unit: kilogram (kg)
• SI Unit: Newton (N)

Measured using a beam balance Measured using a spring balance

• 8. What is free fall?
• Answer:
• Answer:

SHRIYANSH ACARAHURI

The motion of an object when it falls under the influence of gravity alone is called free fall.

9. Write the equations of motion for free fall.

v=u+gt s=ut+\frac12gt^2 u = Initial velocity v=Final velocity

• Acceleration due to gravity g=
• Time t= s = Distance
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Answer:

10. What is escape velocity?

Escape velocity is the minimum velocity required by an object to escape the Earth's gravitational pull without further propulsion.

• Value: 11.2 km/s
• Answer:
• 11. What is an artificial satellite?

An artificial satellite is a human-made object launched into space to revolve around the Earth or another celestial body.

SH ACANYAHURL

12. What are the uses of artificial satellites?

Answer:

Weather forecasting Communication Television broadcasting GPS and navigation Scientific research

13. What is a natural satellite?

Answer:

A natural satellite is a celestial body that revolves around a planet naturally. Example: The Moon is the natural satellite of the Earth.

• 14. What is a geostationary satellite?
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Answer:

A geostationary satellite revolves around the Earth in 24 hours in the same direction as the Earth's rotation and appears stationary over one point on the Earth's surface.

15. State any four applications of gravitation.

Answer:

1. Keeps planets in their orbits around the Sun.

2. Keeps the Moon in orbit around the Earth.

3. Causes tides in oceans.

4. Keeps objects firmly on the Earth's surface.

ADKRAHURI

16. Why does an object fall towards the Earth?

Answer:

An object falls towards the Earth because the Earth exerts a gravitational force on it.

17. Why is the weight of an object less on the Moon than on the Earth?

Answer:

The Moon's gravitational force is much weaker than the Earth's. Therefore, the weight of an object on the Moon is about one-sixth of its weight on the Earth.

18. State the SI units of the following:

• Quantity SI Unit
• Force Newton (N)
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• Kilogram (kg)
• Mass
• Weight Newton (N)
• Distance Metre (m)
• Time Second (s)
• Frequently Asked MCQs

1. Who discovered the Universal Law of Gravitation?

• • A. Galileo
• B. Sir Isaac Newton ♡
• C. Einstein
• D. Archimedes
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2. The value of g on Earth is:

• A. 10 m/s²
• B. 9.8 m/s²
• C. 11.2 m/s²
• D. 8.9 m/s²
• 3. The SI unit
• B. Newton ♥
• C. Joule
• D. Watt

4. Escape velocity of the Earth is:

• • A. 7.9 km/s
• • B. 11.2 km/s
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D. 12 km/s

5. Which is the natural satellite of the Earth?

• A. Moon ♡
• B. Mars
• C. Venus
• D. Sun for free fall.
• SHRIYANS VYNURI

Board Exam Important Questions (3-5 Marks)

1. State and explain Newton's Universal Law of Gravitation with the formula. 2. Differentiate between mass and weight.

3. Define free fall and write the equations of mot

SHRIYANSH ACADEMY RAHURI

4. Explain acceleration due to gravity (g). 5. What is escape velocity? State its value. 6. Explain the uses of artificial satellites.

7. What is a geostationary satellite? Write its characteristics. 8. State the applications of gravitation in daily life.

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