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
Options
A. 17° 48'
B. 18° 48'
C. 19° 48'
D. 20° 48'
E. 21° 48'.
Correct Answer
19° 48'
More questions
1. Pick up the incorrect statement from the following :
Options
A. Free surface ground water is subjected to atmospheric pressure
B. Water table surface rises and falls with seasons
C. Depth of water table is directly proportional to the rate of drawal of water