Physics

Grade-10

Easy

Question

The pull exerted by the Earth on a body of mass 1 kg is ___ N.

98
10
9.8
100

hint Hint:

Use the formula for gravitational force.

The correct answer is: 9.8

The correct option is c)9.8.
From Newton's law of universal gravitation, we know that the gravitational force between objects is given by the following formula:
$F equals fraction numerator G M m over denominator R squared end fraction$
$Mass of earth=M= 6 . 0 \times 1 0^{24} k g$
$m=1kg$
$R= 6.4 x 10 6$
$G= 6.67 x 10 -11 Nm 2 /kg$
$Substituting the values we get,$
$F=9.8 N$

Gravitational force attracts the earth and the moon to each other. The earth attracts the moon with the following force:

The correct option is b)Same as that exerted by the moon.
Let m and M be the masses of the moon and the earth separated by a distance r.

Force of attraction that earth exert on moon= $fraction numerator G M m over denominator r squared end fraction$

Force of attraction that moon exert on earth= $fraction numerator G M m over denominator r squared end fraction$

This shows that they both exert same pressure on each other.

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Can’t find what you’re looking for?

The pull exerted by the Earth on a body of mass 1 kg is ___ N.

98109.8100

Use the formula for gravitational force.

The correct answer is: 9.8

Related Questions to study

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What is the mass of an object whose weight is 98 newtons?

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The weight of the body at a certain place is 30 N. The acceleration due to gravity at that point is 10 m/s2. Find out the weight of the object at the place where the acceleration due to gravity is 5 m/s2?

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The gravitational attraction between the earth and an apple causes it to fall of a tree. If F1 is the magnitude of the earth's force on the apple and F2 is the magnitude of the apple's force on the earth, then:

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The gravitational force of attraction between two bodies of 1 kg each, separated by 2 m is ____ N.

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98
10
9.8
100

The weight of the body at a certain place is 30 N. The acceleration due to gravity at that point is 10 m/s². Find out the weight of the object at the place where the acceleration due to gravity is 5 m/s^₂_?

The weight of the body at a certain place is 30 N. The acceleration due to gravity at that point is 10 m/s². Find out the weight of the object at the place where the acceleration due to gravity is 5 m/s^₂_?

The weight of the body at a certain place is 30 N. The acceleration due to gravity at that point is 10 m/s². Find out the mass of the object at the place where the acceleration due to gravity is 5 m/s²?

The weight of the body at a certain place is 30 N. The acceleration due to gravity at that point is 10 m/s². Find out the mass of the object at the place where the acceleration due to gravity is 5 m/s²?

The gravitational attraction between the earth and an apple causes it to fall of a tree. If F₁ is the magnitude of the earth's force on the apple and F₂ is the magnitude of the apple's force on the earth, then:

The gravitational attraction between the earth and an apple causes it to fall of a tree. If F₁ is the magnitude of the earth's force on the apple and F₂ is the magnitude of the apple's force on the earth, then: