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(b) What is the usual value of the acceleration due to gravity of earth? 4 years ago BidishaKashayap1333 class 9 gravitation lakhmir singh Define mass of a body. What is the SI unit of mass? (b) Define weight of a body. What is the SI unit of weight? (c) What is the relation between mass and weight of a body? 4 years ago BidishaKashayap1333 class 9 gravitation lakhmir singh How much is the weight of an object on the moon as compared to its weight on the earth? Give reason for your answer. 4 years ago BidishaKashayap1333 class 9 gravitation lakhmir singh Which is more fundamental, the mass of a body or its weight? Why? 4 years ago BidishaKashayap1333 class 9 gravitation lakhmir singh An object has mass of 20 kg on earth. What will be its (i) mass, and (ii) weight, on the moon? 4 years ago BidishaKashayap1333 class 9 gravitation lakhmir singh A stone resting on the ground has a gravitational force of 20 N acting on it. What is the weight of the stone? What is its mass? 4 years ago BidishaKashayap1333 class 9 gravitation lakhmir singh A force of 20 N acts upon a body whose weight is 9.8 N. What is the mass of the body and how much is its acceleration? 4 years ago BidishaKashayap1333 class 9 gravitation lakhmir singh Can a body have mass but no weight? Give reasons for your answer. 4 years ago BidishaKashayap1333 class 9 gravitation lakhmir singh Write the differences between mass and weight of an object. 4 years ago BidishaKashayap1333 class 9 gravitation lakhmir singh When a cricket ball is thrown vertically upwards, it reaches a maximum height of 5 metres. (a) What was the initial speed of the ball? (b) How much time is taken by the ball to reach the highest point? 4 years ago BidishaKashayap1333 class 9 gravitation lakhmir singh A stone is thrown vertically upwards with a speed of 20 m/s. How high will it go before it begins to fall? 4 years ago BidishaKashayap1333 class 9 gravitation lakhmir singh A stone is dropped from a height of 20 m. (i) How long will it take to reach the ground? (ii) What will be its speed when it hits the ground? 4 years ago BidishaKashayap1333 class 9 gravitation lakhmir singh A stone falls from a building and reaches the ground 2.5 seconds later. How high is the building? 4 years ago BidishaKashayap1333 class 9 gravitation lakhmir singh A piece of stone is thrown vertically upwards. It reaches the maximum height in 3 seconds. 4 years ago BidishaKashayap1333 class 9 gravitation lakhmir singh The mass of sun is 2 x 10^30 kg and the mass of earth is 6 x 10^24. If the average distance between the sun and the earth be 1.5 x 10^8 km 4 years ago BidishaKashayap1333 class 9 gravitation lakhmir singh What is the force of gravity on a body of mass 150 kg lying on the surface of the earth? 4 years ago BidishaKashayap1333 class 9 gravitation lakhmir singh Calculate the force of gravitation between two objects of masses 50 kg and 120 kg respectively kept at a distance of 10 m from one another. 4 years ago BidishaKashayap1333 class 9 gravitation lakhmir singh Explain why, if a stone held in our hand is released, it falls towards the earth. 4 years ago BidishaKashayap1333 class 9 gravitation lakhmir singh State two applications of universal law of gravitation. 4 years ago BidishaKashayap1333 class 9 gravitation lakhmir singh What happens to the gravitational force between two objects when the distance between them is: (i) doubled? (ii) halved? 4 years ago BidishaKashayap1333 class 9 gravitation lakhmir singh Page 5 / 5 Prev 1 2 3 4 5 Share: Super Globals Requests: Server: Options and Features route: community use_home_url: url: https://eanshub.com/community/ pageid:187 default_groupid: 3 2022 How Can We Help? Δ Home About Us Contact Us Privacy Policy Term of Use Copyright © 2020 Eanshub All Rights Reserved
