A block is placed on a horizontal plank. The plank performs SHM along a vertical line with amplitude 40 cm. The block just loses contact with the plank when the plank is momentarily at rest. Then ( g

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A block is placed on a horizontal plank. The plank performs SHM along a vertical line with amplitude 40 cm. The block just loses contact with the plank when the plank is momentarily at rest. Then ( g = 10 m/s²):

TestHub · Accepted Answer

Contact is lost at the top where a = g = ω 2 A : ω 2 = 25 , T = 2 π /5 s. At the bottom N = m ( g + g ) = 2 m g . Halfway down, a = g /2 upward, N = 1.5 m g . At the mean position a = 0 , N = m g .

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