6. Two identical disks, with rotational inertia I (= 1/2 MR2),roll without slipp

Question

6. Two identical disks, with rotational inertia I (= 1/2 MR2),roll without slipping across a horizontal floor and then up inclines. Disk A rolls up itsincline without sliding. On the other hand, disk B rolls up a frictionless incline. Otherwise theinclines are identical. Disk A reaches a height 12 cm above the floor before rolling downagain. Disk B reaches a height above the floor of: A) 24 cm B) 18 cm C) 12 cm D) 8 cm E) 6 cm 6. Two identical disks, with rotational inertia I (= 1/2 MR2),roll without slipping across a horizontal floor and then up inclines. Disk A rolls up itsincline without sliding. On the other hand, disk B rolls up a frictionless incline. Otherwise theinclines are identical. Disk A reaches a height 12 cm above the floor before rolling downagain. Disk B reaches a height above the floor of: A) 24 cm B) 18 cm C) 12 cm D) 8 cm E) 6 cm

Explanation / Answer

Given :        Two identical disks, withrotational inertia I (= 1/2 MR2), roll without slipping across ahorizontal floor and then up inclines. Disk A rolls up its inclinewithout sliding. On the other hand, disk B rolls up a frictionlessincline. Otherwise the inclines are identical. If Disk A reaches aheight 12 cm above the floor before rolling down Disk B reaches aheight of 6 cm                   As disk B rolls up a frictionless incline. Hope this helps u!

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