Learning Goal: To understand and apply the formula T = Ia to rigid objects rotating about a fixed axis. To find the acceleration a of a particle of mass m, we use Newton's second law: Fnet = ma, where Fnet is the net force acting on the particle. To find the angular acceleration a of a rigid object rotating about a fixed axis, we can use a similar formula: Thet= Ia, where Thet Στ is the net torque acting on the object and I is its moment of inertia. Figure m1 1 of 2 Part C Now consider a similar situation, except that now the swing bar itself has mass mbar-(Figure 2) Find the magnitude of the angular acceleration a of the seesaw. Express your answer in terms of some or all of the quantities m₁, m2, mbar, l, as well as the acceleration due to gravity g. ► View Available Hint(s) a = Submit Part D V—| ΑΣΦ 1 ? In what direction will the seesaw rotate and what will the sign of the angular acceleration be? O The rotation is in the clockwise direction and the angular acceleration is positive. O The rotation is in the clockwise direction and the angular acceleration is negative. O The rotation is in the counterclockwise direction and the angular acceleration is positive. O The rotation is in the counterclockwise direction and the angular acceleration is negative. Submit Request Answer

Task 1: Produce a report by applying the concepts of engineering materials relating to a tricycle as shown in Figure 1, with the following incorporated: 3. Choose the most appropriate material from your point of view that can be used to produce the item/product with reasons discussed. Figure 1: Tricycle

Question 4 a) Each cylinder in a four-cylinder car engine has a bore diameter of 63.53 mm and the stroke for each piston is 175.00 mm. Calculate the cubic capacity of the engine in cm? and calculate the clearance volume per cylinder for a compression ratio, r, of 6.25. b) The bore diameter of each cylinder in a six-cylinder four-stroke internal combustion engine is 32 mm and the stroke of each piston is 125 mm. During testing., the engine runs at 1450 revolutions per minute (rpm) with a pressure-volume indicator diagram showing a mean net area of 2.90 cm and a diagram length of 0.85 cm. The pressure scale on the indicator diagram is set to 165 kN/m per cm. Calculate the mean effective pressure (m.e.p) and the indicated power in kilowatts (kW) developed by this six-cylinder four-stroke engine. Give your answer to 2 decimal c) A hollow connecting rod has an inner diameter of 26.25 mm and is subjected to an axial tensile load of 500 MN. If the maximum allowable stress for this hollow rod…

15.16. Files & More (F&M), a manufacturer of office equipment, is introducing a new product, the BUNGEE desk chair, made from elastic webbing that provides both comfort and support. The materials that go into the chair are shown below.     a. Construct a product structure diagram that reflects how the product is assembled.     b. Convert the product structure diagram into a multilevel indented bill of material.     c. F&M is trying to decide how much of the chair to assemble for the customer prior to shipping. Recommend a preassembly strategy that would allow easy assembly for the customer, and document it with a revised multilevel indented bill of material.