A block of weight 50 kg is placed on a horizontal plane. When a horizontal force of 18 kg is applied, the block is just on the point of motion. The angle of friction is« Back to Previous Page
A. 17° 48'
B. 18° 48'
C. 19° 48'
D. 20° 48'
E. 21° 48'.
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C. 19° 48’ |
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C. 19° 48’ |
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