Revision Form 4 KSSM Chapter Gravitation

Newton’s Universal Law of Gravitation state that gravitational force, F is ______ to the product of mass of the objects and ______ to the square of the distance between the objects

Hukum Kegravitian Semesta Newton menyatakan bahawa daya graviti, F adalah ______ terhadap hasil darab jisim-jisim objek dan ______ terhadap kuasa dua jarak antara objek-objek

• directly proportional, directly proportional

  berkadar terus, berkadar terus

• directly proportional, inversely proportional

  berkadar terus, berkadar songsang

• inversely proportional, inversely proportional

  berkadar songsang, berkadar songsang

• inversely proportional, directly proportional

  berkadar songsang, berkadar terus

 $F\ =\ G\ \frac{m_1m_2}{r^2}$  
What is represented by r in this formula?
Apakah yang diwakili oleh r dalam formula ini?

• Gravitational force between two objects
  Daya graviti antara dua objek

• Universal gravitational constant
  Pemalar kegravitian semesta

• Mass of object
  jisim objek

• Distance between two objects
  jarak antara dua objek

Factors that affect gravitational force are

Faktor-faktor yang mempengaruhi daya graviti adalah

• mass of objects

  jisim objek-objek

• velocity of objects

  halaju objek-objek

• acceleration of objects

  pecutan objek-objek

• distance between the objects

  jarak antara objek-objek

When the distance between two objects increases, the gravitational force __________

Apabila jarak antara objek-objek bertambah, daya graviti _________

• increases

  bertambah

• decreases

  berkurang

• unchanged

  tidak berubah

When the mass of two objects increases, the gravitational force _______

Apabila jisim antara dua objek meningkat, daya graviti ________

• increases

  bertambah

• decreases

  berkurang

• unchanged

  tidak berubah

This formula is used to find the value of g. What is g?

Formula ini digunakan untuk mendapatkan nilai g. Apakah itu g?

• Mass of Earth

  Jisim Bumi

• Gravitational acceleration of Earth

  Pecutan graviti Bumi

• Universal gravitation constant

  Pemalar kegravitian semesta

• Distance between Earth and the object

  Jarak antara Bumi dengan objek

When the distance between object and Earth increases, Earth's gravitational acceleration _______

Apabila jarak antara objek dan Bumi bertambah, pecutan graviti Bumi ________

• increases

  bertambah

• decreases

  berkurang

• unchanged

  tidak berubah

Calculate the gravitational acceleration when the object is at 3R.
Kirakan pecutan graviti apabila objek berada pada 3R.

 $g\ =\ \frac{GM}{r^2}$  

•  $2.5\ m\ s^{-2}$  

•  $3.3\ m\ s^{-2}$  

•  $4.9\ m\ s^{-2}$  

•  $9.8\ m\ s^{-2}$  

Calculate the gravitational acceleration of Jupiter.
Kirakan pecutan graviti bagi Jupiter.

 $g\ =\ \frac{GM}{r^2}$  

•  $3.7\ m\ s^{-2}$  

•  $10.42\ m\ s^{-2}$  

•  $25.94\ m\ s^{-2}$  

•  $274\ m\ s^{-2}$  

What happen to the centripetal force if the linear speed of the object is higher?

Apakah yang berlaku terhadap daya memusat apabila laju linear objek lebih tinggi?

• Centripetal force will be higher

  Daya memusat akan lebih tinggi

• Centripetal force will be lower

  Daya memusat akan lebih rendah

• Centripetal force will stay the same

  Daya memusat akan tetap sama