S08_midterm1a_sample

# S08_midterm1a_sample - equation r = 100(2-cos ) mm....

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Midterm 1a ENES 221 Name:_____________________ Section______________ Problem 1: _______________ Problem 2: _______________ Problem 3: _______________ Total: _______________ As part of the academic integrity code practiced at the University of Maryland, please copy the statement below on the space provided, and sign and date the statement at the bottom of the page: I pledge on my honor that I have not given or received any unauthorized assistance on this examination (or assignment). ___________________________________________________________ ___________________________________________________________ ___________________________________________________________ Signature: ________________________ Date:____________

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Midterm 1a ENES 221 Name:_____________________ Section______________ 1. [32 points] The rod OA rotates counterclockwise with a constant angular velocity of ! ! = 5 rad/s. Two pin- connected slider blocks, located at B , move freely on OA and the curved rod whose shape is described by the

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Unformatted text preview: equation r = 100(2-cos ) mm. Determine the acceleration of the slider block when = 120° in r-coordinates. mm Midterm 1a ENES 221 Name:_____________________ Section______________ 2. [34 points] The wheel in the figure below rolls without slipping with constant angular velocity 6 . 1 # \$ rad/s. Calculate the angular velocity of the bar AB and the velocity of the slider B when the mechanism is in the position shown. B A 0.2 30 o 1 m 0.4 \$ % =1.6 rad/s Dimensions in meters Midterm 1a ENES 221 Name:_____________________ Section______________ A a # B a 2 rad/s 69 . 7 # & " 3. [34 points] Each of the sliding bars engages its respective rim of the two riveted wheels (they move as one rigid body) without slipping. The bar A accelerates to the right and there is no acceleration of bar B . The wheel has an angular acceleration magnitude of 7.69 rad/s 2 in the direction shown. Calculate the acceleration of point P at the instant depicted....
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## This note was uploaded on 11/02/2010 for the course ENES 221 taught by Professor Kiger during the Spring '08 term at Maryland.

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S08_midterm1a_sample - equation r = 100(2-cos ) mm....

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