The minimum velocity of the spacecraft to escape from earth's gravitational force must be _____________.
- A$112 km / s$
- ✓$11.2 km / s$
- C$1.12 km / s$
- D$0.112 km / s$
Answer: B.
View full solution →Question types
P-1 Gravitation question types
19 questions across 6 question groups — pick any mix to generate a Science paper with step-by-step answer keys.
19
Questions
6
Question groups
5
Question types
01
M.C.Q
1 Q→02Answer the following questions:[1 M]
1 Q→03Give scientific reasons: [2 M]
1 Q→04Answer the following questions: [2 M]
7 Q→05Answer the following questions: [3 M]
8 Q→06Distinguish Between :
1 Q→Sample Questions
P-1 Gravitation questions
One sample from each question group in this chapter. Select any group above to see the full set with answer keys.
Write proper answer in the box:
The weight of an object changes from place to place though its mass is constant.
What is free fall? When is it possible?
A metal ball of mass 5 kg falls from a height of 490 m . How much time it will take to reach the ground? $\left( g =9.8 m / s ^2\right)$
View full solution →An iron ball of mass 5 kg is released trom a height of 125 m and falls freely to the ground. Assuming that the value of g is $10 m / s ^2$, calculate time taken by the ball to reach the ground.
View full solution →Will the value of $g$ be the same everywhere on the surface of the earth? Justify your answer.
View full solution →Explain why value of $g$ changes if we go inside the earth.
View full solution →Observe the figure and answer the questions:
$i.$ State Newton's universal law of gravitation.
$ii.$ If the distance between the two bodies is tripled, how will the gravitational force between them change?
$iii.$ What will happen to gravitational force, if mass of one of the objects is doubled?
View full solution →$i.$ State Newton's universal law of gravitation.
$ii.$ If the distance between the two bodies is tripled, how will the gravitational force between them change?
$iii.$ What will happen to gravitational force, if mass of one of the objects is doubled?
Calculate the escape velocity on the surface of the moon given the mass and radius of the moon to be $7.34 \times 10^{22} kg$ and $1.74 \times 10^6 m$ respectively. $($Given: $G=6.67 \times 10^{-11} Nm ^2 / kg ^2 ).$
View full solution →Observe the given figure showing the orbit of a planet moving around the Sun and write the three laws related to it:
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State the laws related to the given diagram:
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State Kepler's three laws of motion.
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State the laws related to the given diagram:
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State Kepler's three laws of motion.
What would be the value of $g$ on the surface of the earth if its mass was twice as large and its radius half of what it is now?
View full solution →The mass and weight of an object on the earth are 5 kg and 49 N respectively. What will be their values on the moon? Assume that the acceleration due to gravity on the mode is $1 / 6$ th of that of the earth.
View full solution →Distinguish between Mass and Weight.
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