A block is placed on a smooth incline. It is fixed to incline by a horizontal string. Which of the following is a correct statement.

Question

TestHub · Accepted Answer

Block on a smooth incline held by a horizontal string. Forces: weight mg, tension T (horizontal), normal N (perpendicular to incline).

Along the incline (45°): $T cos 4 5^{\circ} = m g sin 4 5^{\circ} \Rightarrow T = m g$ .

Perpendicular: $N = m g cos 4 5^{\circ} + T sin 4 5^{\circ} = 2 m g$ .

So T equals the weight and N is greater than the weight. Answer: (A).

Physics - NLM Question with Solution | TestHub