A machine weighing 2600 lb is mounted on springs of stiffness 10000 lb/in. Inside the machine a piston that weighs 60 lb moves up and down at a speed of 600 RPM and a stroke of 15 in. The motion of the piston is a sine wave. What is the magnitude of the forced transmitted to the foundation

if they have a finite resultant

luster is not a good characteristic to use by itself because luster is the property of minerals that indicates how much the surface of a mineral reflects light. the luster of a mineral is affected by the brilliance of the light used to observe the mineral surface.