A block of mass 20 kg is held at rest on a smooth inclined plane by a rope. The smooth plane is inclined at an angle of 20 to the horizontal and the rope makes an angle of 55 with the plane. Calculate the magnitude of the tension in the rope, in newtons, to two significant figures. (Take the magnitude of the acceleration due to gravity, g, to be 9.8m s.) -2 The magnitude of the tension in the rope is N (to 2 s.f.).