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A horizontal circular plate is suspended as shown from three wires which are attached to a support at D and that form 30° angles with the vertical.
A hemisphere of mass m and radius r is released from rest in the position shown. Knowing that the hemisphere rolls without slipping
A hemisphere of weight W and radius r is released from rest in the position shown. Determine
A hawser is wrapped two full turns around a bollard. By exerting a 320-N force on the free end of the hawser, a dockworker can resist a force of 20kN
A handball player throws a ball from A with a horizontal velocity v0. Knowing that d = 15 ft, determine
A helicopter is flying with a constant horizontal velocity of 90 mi/h and is directly above point A when a loose part begins to fall
A freshwater marsh is drained to the ocean through an automatic tide gate that is 4 ft wide and 3 ft high. The gate is held by hinges located along its top edge
A framing anchor is formed from 2-mm-thick galvanized steel. Determine the mass moment of inertia of the anchor with respect to each of the coordinate axes.
A force P of magnitude 160 N is applied to a man's hand as shown. Replace P with an equivalent force-couple system
A grade beam AB supports three concentrated loads and rests on soil and the top of a large rock. The soil exerts an upward distributed load, and the rock exerts
A golfer hits a ball with an initial velocity of magnitude v0 at an angle a with the horizontal. Knowing that the ball must clear the tops of two trees
A golfer aims his shot to clear the top of a tree by a distance h at the peak of the trajectory and to miss the pond on the opposite side.
A gardener wishes to connect a water supply pipe from point C on the foundation of a 30-ft-long greenhouse to a water main that passes through points A and B.
A half section of a uniform thin pipe of mass m is at rest when a force P is applied as shown
A half section of a uniform cylinder of radius r and mass m rests on two casters A and B, each of which is a uniform cylinder of radius r/4 and mass m/8
A half cylinder of mass m is released from rest in the position shown and swings freely about the horizontal diameter AB.
A group of students launches a model rocket in the vertical direction. Based on tracking data, they determine that the altitude of the rocket was 27.5 m
A golfer hits a 1.62-oz ball with an initial velocity of 160 ft/s at an angle of 25° with the horizontal. Determine
A Global Positioning System (GPS) satellite is in a circular orbit 12,580 mi above the surface of the earth and completes one orbit every 12 h
A gun is aimed at a point A located 20° west of north. Knowing that the barrel of the gun forms an angle e of 35° with the horizontal
A hand-operated hydraulic cylinder has been designed for use where space is severely limited. Determine the magnitude of the force exerted on the piston
A half-cylinder of mass m and radius r is released from rest in the position shown. Knowing that the half-cylinder rolls without sliding, determine
A force P is applied to the lever of an arbor press. Knowing that P lies in a plane parallel to the yz plane and that 20 My = - N·m and Mz = -3.5 N·m
A force P is applied to a tape wrapped around a uniform disk that rests on a frictionless horizontal surface
A force P is applied to slider C as shown. The constant of the spring is 1.6kN/m, and the spring is un-stretched when member BD is horizontal