Rod ab is made of a mild steel that is assumed to be elastoplastic with e = 200 gpa and σy = 345 mpa. after the rod has been attached to the rigid lever cd, it is found that end c is 6 mm too high. a vertical force q is then applied at c until this point has moved to position c0 . determine the required magnitude of q and the deflection δ1 if the lever is to snap back to a horizontal position after q is removed. hint: "elastoplastic" means that rod ab is permanently deformed, and will not spring back to totally undeformed.

Three different objects, all with different masses, are initially at rest at the bottom of a set of steps. each step is of uniform height . the mass of each object is a multiple of the base mass : object 1 has mass 4..00m , object 2 has mass 1..96m , and object 3 has mass . when the objects are at the bottom of the steps, define the total gravitational potential energy of the three-object system to be zero. if the objects are then relocated as shown, what is the new total potential energy of the system? each answer requires the numerical coefficient to an algebraic expression. each algebraic expression is given using some combination of the variables , , and , where is the acceleration due to gravity. enter only the numerical coefficient. (example: if the answer is 1..23mgd , just enter 1.23)

What type of relationship exists between the length of a wire and the resistance, if all other factors remain the same? o a. resistance is directly related to length. ob. resistance is directly related to the square of the length. c. resistance is inversely related to the length. d. resistance is inversely related to the square of the length. reset next

An object resting on a table weighs 100 n. with what force is the object pushing on the table? with what force is the table pushing on the object? explain how you got your answer.