please answer it clearly with all steps

Problem-based learning - Acquire enhanced problem-solving skills using critical thinking 1. The layout and dimensions of a double shoe brake is shown in Figure. The diameter of the brake drum is 270mm and the contact angle for each shoe is 95. If the coefficient of friction for the brake lining and the drum is 0.4 , find the spring force necessary to transmit a torque of 45Nm. Also determine the width of the brake shoes, if the bearing pressure on the lining material is not to exceed 0.28N/mm2. All dimensions in mm