In this figure the blue shim is used for adjusting the valve

For a gate width of 2 m into the paper, determine the force required to hold the gate abc at its location.

An engine, weighing 3000 n, is supported on a pedestal mount. it has been observed that the engine induces vibration into the surrounding area through its pedestal at the maximum operating speed. determine the stiffness of the dynamic vibration absorber spring in (n/m) that will reduce the vibration when mounted on the pedestal. the magnitude of the exciting force is 250 n, and the amplitude of motion of the auxiliary mass is to be limited to 2 mm note: in this question type-in right numbers, no decimals, no fractions, no unit. approximate to right number if needed

Brief discuss how the presence of dislocations in crystal structures can be an advantage and a disadvantage to engineer and designers.