Force Class-10

The model of the solar system in which the earth lies at the center is known as .................... .

• Geocentric model

• Heliocentric model

• Atomic model

• Gravitational model

What do you mean by gravitational force?

• The amount of force by which a body is attracted towards the center of the earth.

• The force produced during nuclear reaction

• The strongest and the firstly formed force of the universe.

• The force of attraction between any two masses in the universe.

Who proposed the heliocentric model?

• Sir Issac Newton

• Nicolas Copernicus

• Ptolemy

• Galileo Galilei

Which is the correct formula for gravitational force?

• $F\ =G\ \frac{m_1\cdot m_2}{d^2}$

• $F\ =\frac{GM}{R^2}$
  

• $F=ma$

• $F\ =\frac{Mm}{Gd^2}$

What does 'G' stands for?

• Acceleration due to gravity
• Geocentrism
• Universal Gravitaional Constant
• Gravitational force

What do you mean by gravitational constant?

• The gravitational force produced between two 1 kg masses placed at a distance of 2 meter.
• The gravitational force produced between two 2 kg masses placed at a distance of 1 meter.
• The gravitational force produced between two 2 kg masses placed at a distance of 0.5 meter.
• The gravitational force produced between two 1 kg masses placed at a distance of 1 meter.

What is the value of universal gravitaional constant?

• 6.67 × 10 ^–11 Nm²/kg²

• 9.83 × 10 ^–11 Nm²/kg²

• 6.67 × 10 ^–21 Nm²/kg²

• 9.83 × 10 ^–21 Nm²/kg²

What is the SI unit of gravitational force?

• Waat
• Pascal
• Newton
• Joule

What is the SI unit of 'G' ?

• Nm²/kg²

• Nkg²/m²

• m/s²

• N

What is the SI unit of 'g' ?

• Nm²/kg²

• Nkg²/m²

• m/s

• m/s²