A solid sphere, disc and solid cylinder all of the same
Correct option (a) solid sphere reaches the bottom first. Explanation: For solid sphere K 2 /R 2 = 2/5. For disc and solid cylinder K 2 /R 2 = 1/2. As K 2 /R 2 for solid sphere is smallest, it takes minimum time to reach the bottom of the incline, disc and cylinder reach together later.