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the portable roller stand for supporting boards ejected from a wood planer is designed with a micro- fine height
the solid hemisphere of diameter 2b and concentric cylindrical knob of diameter b are resting on a horizontal surface
the cylinder of mass m and radius r rolls without slipping on the circular surface of radius p attached to the cylinder
the 3-lb pendulum swings about axis o-o and has a mass center at g when 0 each spring has an initial stretch of 4 in
the inverted pendulum of mass m and mass center g is supported by the two springs each of stiffness k if the springs
one end of the torsion spring is secured to the ground at a and the other end is fastened to the shaft at b the
the cross section of a trap door hinged at a and having a mass m and a center of mass at g is shown in the figure the
determine the maximum height h of the mass m for which the inverted pendulum will be stable in the vertical position
a helical spring is to be constructed from a 4340 steel the design calls for 5 coils a coil-to-coil diameter of 12 mm
1 the potential energy of a mechanical system is given by v 6x4 - 3x2 5 where x is the position coordinate which
determine the force q at the jaw of the shear for the 400-n force applied with 30deg hint replace the 400-n force by
the antitorque wrench is designed for use by a crew member of a spacecraft where no stable platform ex- ists against
in designing the toggle press shown n turns of the worm shaft a would be required to produce one turn of the worm
the band wrench is useful for loosening and tight- ening such items as the whole-house water filter e shown assume that
1 the semicylindrical shell of mass m and radius r is rolled through an angle by the force p which re- mains tangent
1 the device shown is designed to prevent clockwise rotation in the horizontal plane of the central wheel by means of
1 a 500-kg log is being steadily pulled up the incline by means of the cable attached to the winch on the truck if the
1 calculate the torque m which the engine of the pickup truck must supply to the rear axle to roll the front wheels
1 the circular cylinder weighs 50 lb and is held by a cord fixed to its periphery at b and to the ground at a if the
a compressive force of 600 n is to be applied to the two boards in the grip of the c-clamp the threaded screw has a
1 a torque m of 1510 n middot m must be applied to the 50-mm-diameter shaft of the hoisting drum to raise the 500-kg
the 2deg tapered pin is forced into a mating tapered hole in the fixed block with a force p 400 n if the force
the vertical position of the 100-kg block is adjusted by the screw-activated wedge calculate the moment m which must be
1 the elements of a deodorant dispenser are shown in the figure to advance the deodorant d the knob c is turned the
the industrial truck is used to move the solid 1200- kg roll of paper up the 30deg incline if the coefficients of