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When a body is thrown up, work done by gravity on the body is (a)positive (b) negative (c) zero (d) cannot say
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Most Upvoted Answer
When a body is thrown up, work done by gravity on the body is (a)posit...
If the body is thrown up then work done is -ve value of g also -ve...But if body come back towards surface then work done nd value of g will be +ve
Community Answer
When a body is thrown up, work done by gravity on the body is (a)posit...
When body moving upward work done is said to be negative ,when it comes back down work done is take as positive
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Position of centre of massIn a uniform gravitational field the centre of mass coincide with the centre of gravity. But these two points do not always coincide, however. For example, the Moon’s centre of mass is very close to its geometric centre (it is not exact because the Moon is not a perfect uniform spher e), but its centre of gravity is slightly displaced towards Earth because of the stronger gravitational force on the Moon’s near side facing the earth. If an object does not have a uniform weight distribution then the center of mass will be closer to where most of the weight is located. For example, the center of gravity for a hammer is located close to where the head connects to the handle. The center of mass can be located at an empty point in space, such as the center of a hollow ball. The center of gravity can even be completely outside of an object, such as for a donut or a curved banana.Standing upright, an adult human’s centre of mass is located roughly at the center of their torso. The centre of mass rises a few inches when with rising arms.The center of gravity can even be at a point outside the body, such as when bent over in an inverted-U pose.An object is in balanced position if its center of gravity is above its base of support. For the two cylinders below, the left cylinder’s CG is above the base of support so the upward support force from the base is aligned with the downward force of gravity. For the cylinder on the right the CG is not above the base of support so these two forces cannot align and instead create a torque that rotates the object, tipping it over.Does the centre of mass does not coincide with the centre of gravity of a body?

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When a body is thrown up, work done by gravity on the body is (a)positive (b) negative (c) zero (d) cannot say
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When a body is thrown up, work done by gravity on the body is (a)positive (b) negative (c) zero (d) cannot say for Class 11 2024 is part of Class 11 preparation. The Question and answers have been prepared according to the Class 11 exam syllabus. Information about When a body is thrown up, work done by gravity on the body is (a)positive (b) negative (c) zero (d) cannot say covers all topics & solutions for Class 11 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for When a body is thrown up, work done by gravity on the body is (a)positive (b) negative (c) zero (d) cannot say.
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