Chapters
Chapter 1: Gravitation
Balbharati solutions for Science and Technology Part 1 10th Standard SSC Maharashtra State Board Chapter 1 Gravitation [Pages 14  15]
Study the entries in the following table and rewrite them putting the connected items in a single row.
I  II  III 
Mass  m/s^{2}  Zero at the centre 
Weight  kg  Measure of inertia 
Acceleration due to gravity

Nm^{2}/kg^{2}  Same in the entire universe 
Gravitational constant  N  Depends on height 
Answer the following question.
What is the difference between mass and weight of an object.
Will the mass and weight of an object on the earth be same as their values on Mars? Why?
Answer the following question
What is the free fall?
Answer the following question
What are acceleration due to gravity ?
Answer the following question
What are escape velocity ?
Answer the following question
What are centripetal force ?
Answer the following question:
Write the three laws given by Kepler. How did they help Newton to arrive at the inverse square law of gravity?
Answer the following question:
A stone thrown vertically upwards with initial velocity u reaches a height ‘h’ before coming down. Show that the time taken to go up is same as the time taken to come down.
Answer the following question
If the value of g suddenly becomes twice its value, it will become two times more difficult to pull a heavy object along the floor. Why?
Explain why the value of g is zero at the centre of the earth.
Let the period of revolution of a planet at a distance R from a star be T. Prove that if it was at a distance of 2R from the star, its period of revolution will be \[\sqrt{8}\] T .
Solve the following example
An object takes 5 s to reach the ground from a height of 5 m on a planet. What is the value of g on the planet?
Solve the following example
The radius of planet A is half the radius of planet B. If the mass of A is M_{A}, what must be the mass of B so that the value of g on B is half that of its value on A?
Solve the following example
The mass and weight of an object on 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 moon is 1/6th of that on the earth.
Solve the following example
An object thrown vertically upwards reaches a height of 500 m. What was its initial velocity? How long will the object take to come back to the earth? Assume g = 10 m/s^{2 }
Solve the following example.
A ball falls off a table and reaches the ground in 1 s. Assuming g = 10 m/s^{2}, calculate its speed on reaching the ground and the height of the table.
Solve the following example
The masses of the earth and moon are 6 × 10^{24} kg and 7.4 × 10^{22} kg, respectively. The distance between them is 3.8 × 10^{5} km. Calculate the gravitational force of attraction between the two? Use G = 6.7 × 10^{–11} N m^{2} kg^{–2}
Solve the following example
The mass of the earth is 6 × 10^{24} kg. The distance between the earth and the sun is 1.5 × 10^{11} m. If the gravitational force between the two is 3.5 × 10^{22} N, what is the mass of the sun? Use G = 6.7 × 10^{–11 }N m^{2} kg^{–2}
Chapter 1: Gravitation
Balbharati solutions for Science and Technology Part 1 10th Standard SSC Maharashtra State Board chapter 1  Gravitation
Balbharati solutions for Science and Technology Part 1 10th Standard SSC Maharashtra State Board chapter 1 (Gravitation) include all questions with solution and detail explanation. This will clear students doubts about any question and improve application skills while preparing for board exams. The detailed, stepbystep solutions will help you understand the concepts better and clear your confusions, if any. Shaalaa.com has the Maharashtra State Board Science and Technology Part 1 10th Standard SSC Maharashtra State Board solutions in a manner that help students grasp basic concepts better and faster.
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Concepts covered in Science and Technology Part 1 10th Standard SSC Maharashtra State Board chapter 1 Gravitation are Concept of Gravitation, Circular Motion, Centripetal Force, Kepler’S Laws, Newton’s Universal Law of Gravitation, Earth’s Gravitational Acceleration, Variation in Value of g, Free Fall, Escape velocity, Concept of Weight, Gravitational Potential Energy.
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