The Drawing Shows A Uniform Horizontal Beam Attached To A Vertical Wall By A Frictionless Hinge And Supported From Below 1 (28.56 KiB) Viewed 19 times
The Drawing Shows A Uniform Horizontal Beam Attached To A Vertical Wall By A Frictionless Hinge And Supported From Below 2 (20.55 KiB) Viewed 19 times
The drawing shows a uniform horizontal beam attached to a vertical wall by a frictionless hinge and supported from below at an angle 9-44° by a brace that is attached to a pin. The beam has a weight of 336 N. Three additional forces keep the beam in equilibrium. The brace applies a force P to the right end of the beam that is directed upward at the angle 8 with respect to the horizontal. The hinge applies a force to the left end of the beam that has a horizontal component and a vertical component V. Find the magnitudes of these three forces. (a) V- i (b) P= i (c) H-i Hinge Beam Pin Brace
Conceptual Example 14 provides useful background for this problem. A playground carousel is free to rotate about its center on frictionless bearings, and air resistance is negligible. The carousel itself (without riders) has a moment of inertia of 122 kg-m². When one person is standing at a distance of 1.68 m from the center, the carousel has an angular velocity of 0.595 rad/s. However, as this person moves inward to a point located 0.644 m from the center, the angular velocity increases to 0.860 rad/s. What is the person's mass? Number i Units
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