ADE-9 1. An inclined plane is 20cm long and is inclined at an angle of 15° to the horizontal line. If the effort required to push a block of weight 3,000 N up the slope is 900 N, what is the efficiency of the inclined plane? (sine 15° = 0.26, cosine 15° = 0.97) 2. An effort of 60N applied on the wheel with radius of 4m and a load of 120N suspended on the axle. If the efficiency of this wheel and axle is 0.8 or 80 %, then find the a) M.A b) V.R c) the radius of axle (r) d) the input work (W) e) output work (W.) f) energy wasted in percentage (%) 3. A machine is 60% efficient. The effort moves through 5 times distance moved by load. Find the effort required to raise a dead of 120N. A wedge has thickness or width and M.A of 4cm and 2 respectively. Determine the penetration length (1)(Assume no energy losses) Write the differences among single fixed, single movable & compound pulley. Answer the following questions based on the combinations of pulley systems or block & tackle. Find the a) V. R b) M.A c) SE if SL = 80cm SE =? d) force on each rope e) Efficiency if the effort is 60​