A merry-go-round on a playground consists of a horizontal solid disk with a weight of 795 N and a radius of 1.56 m. A child applies a force 49.0 N tangentially to the edge of the disk to start it from rest. What is the kinetic energy of the merry-go-round disk (in J) after 2.95 s? ________J

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Q: To develop muscle tone, a woman lifts a 2.00-kg weight held in her hand. She uses her biceps muscle…

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Q: A horizontal 800-N merry-go-round is a solid disk of radius 1.50 m and is started from rest by a…

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Q: 9.0 kg 1.0 m 1.2 kg 2.0 m 2.5 kg

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Q: To drive a typical car at 40 mph on a level road for one hour requires about 3.2 × 10^7 J of energy.…

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Q: A 5kg hoop 2m in diameter rolls down a plane 15m long inclined 30 degrees with the horizontal at the…

A: Height of the incline will be -  sinθ=hlsin 30=h15 mh =7.5 m Therefore, total potential energy of…

Q: A uniform cylindrical grindstone has a mass of 10 kg and a radius of 12 cm. What is the rotational…

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Q: What will be the cross product of the vectors 2i+3j+k and 6i+9j+3k ? * Oi+2j + k Oi-j-5k O 2i -j- 5k

A: Image_1

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Q: A frictionless pulley has the shape of a uniform solid disk of mass 2.50 kg and radius 20.0 cm. A…

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Q: A ring and disc are both rolling without slipping so that both have a kinetic energy of 144. What is…

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