e102_hw7 - The cart B moves to the right with acceleration...

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: The cart B moves to the right with acceleration a = 2g. If the steady-state angular deflection of the uniform slender rod of mass 3m is observed to be 20°, determine the value of the torsional spring constant K The spring, which exerts a mo- ment of magnitude M = K9 on the rod, is unde— formed when the rod is vertical. The values of m and l are 0.5 kg and 0.6 m, respectively. Treat the small end sphere of mass m as a particle. The two uniform identical bars are freely hingelii at the lower ends and are supported at the upper: ends by small rollers of negligible mass which rolls on a horizontal rail. Determine the steady-Stat angle 9 assumed by the bars when they are ac celerating under the action of a constant foroeF Y Also find the vertical forces on the rollers at 155 and B. '7? The uniform 16.1»lb slender bar is hinged about a horizontal axis through 0 and released from rest in the horizontal position. Determine the dis- tance b from the mass center to 0 which will re- sult in an initial angular acceleration of 16.1 rad/secg, and find the force R on the bar at 0 just ‘ after release. l; l E-102 H.W. 7 (<4) The uniform semicircular bar of mass m and ra- ' dius r is hinged freely about a horizontal axis through A. If the bar is released from rest in the position shown where AB is horizontal, deter- mine the initial angular acceleration a of the bar and‘the expression for the force exerted on the bar by the pin at A (Note carefully that the initial tangential acceleration of the mass center is not vertical.) The uniform steel I—beam has a mass of 300 kg and is supported in the vertical plane as shown. Calculate the force R supported by the pin at O for the condition immediately after the support at B is suddenly removed. The mass of the bracket on the left end is small and may be ne- glected. Also treat the beam as a uniform slender bari ...
View Full Document

{[ snackBarMessage ]}

Ask a homework question - tutors are online