An Elf (m, = 0.9 kg) on a L = 2.0 m long shelf of mass m, 1.5 kg and puts a large present (m, = 8.6 kg) at a distance 0.34 = 0.6 m away from a wall. The Elf stands on the top of the present. The rope at the end of the shelf makes an angle of 60 with the horizontal direction. Determine the magnitude of tension in the string. Answer in N to two decimal places. -0.34- 60