The pulley below has a mechanical advantage of 3 and has a load of 300N assume an ideal pulley without friction losses, determine the following: a) what input force (input) do you apply to lift the load of 300 N? B) what is the tension in the 3 lines of the ropes of the pulley on the output side with the load as illustrated in the diagram? C) if the load is lifted to a height of 12 cm, how much rope is pulled on the input side d (in) in the diagram?

If F = 810 N , determine the tension developed in cables AB, AC, and AD

Question 1 a) Figure Q1a shows a bracket that can roll and move horizontally along a beam. A 1600 N force at 15° relative to the horizontal axis acts at A. Determine the force P at 25° relative to vertical axis necessary to keep the bracket static; (i) (ii) Calculate the downward resultant force acting vertically at A. Assume coplanar forces. 150 1600 N 250 P Figure Q1a b) If a pipe with an inner diameter of 36 mm is subjected to an axial load of 5.20 x 105 N and the maximum allowable stress in the pipe is 7.5 x 10º N/m², calculate the minimum wall thickness required for the pipe. Give your answer in millimetres (mm) to 2 decimal places. c) A wire with a Young's Modulus, E, of 8.5 x 106 N/m² and an original length of 1.5 m is under tension. If the wire length extension is 2.5 mm, calculate the stress in the wire. Give your answer in N/m² to 2 decimal places.

A 68.4 kg man stands on his toes by exerting an upward force through the Achilles tendon, as shown in the figure. Part (a)  In units of newtons, what is the magnitude of the force through the Achilles tendon if he stands on one foot?  Part (b)  Calculate the force in units of newtons at the pivot of the simplified lever system shown. That force is representative of forces in the ankle joint.