InterviewSolution
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InterviewSolution
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Answer the following questions.a. 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?b. What are (i) free fall, (ii) acceleration due to gravity (iii) escape velocity (iv) centripetal force ?c. Write the three laws given by Kepler. How did they help Newton to arrive at the inverse square law of gravity?d. 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.e. 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? |
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Answer» Answer the following questions. a. 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? b. What are (i) free fall, (ii) acceleration due to gravity (iii) escape velocity (iv) centripetal force ? c. Write the three laws given by Kepler. How did they help Newton to arrive at the inverse square law of gravity? d. 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. e. 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? |
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