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CBSE Class 9 Answered

A horizontal force of 10 N is necessary to just hold a block stationary against a wall. The coefficient of friction between the block and the wall is 0.2. Find the weight of the block. (Take g = 10 m/s2)
Asked by a.behera67 | 21 Jan, 2016, 08:08: PM
answered-by-expert Expert Answer
Horizontal force on body = Normal reaction force N = 10 N

Maximum friction f = μN = Mg 
Thus, Mg = 0.2 × 10 = 2 N
Answered by Faiza Lambe | 22 Jan, 2016, 09:24: AM

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