MasteringEngineering Masteringcomputerscience Homework section12.9 Absolute Depe
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MasteringEngineering Masteringcomputerscience Homework section12.9 Absolute Dependent Motion Analysis of Two Particles Google Chrome geng 4580290&offs; next PHY 202 Dynamics (Hibbeler, 14th ed.) signed in as mohammad algahtani I Hep Close Homework 6 Section129 Absolute De Problem 2.215 Resources v previous l 3 of 6 l next Problem 12.215 Part A The motor draws in the cord at B with an acceleration of an 2 m/s When Determine the velocity of the collar at this instant. sA 1.5 m, vB 5.9 m/s (Figure 1) Express your answer to three significant figures and include the approp priate units. Enter positive value if the velocity is to the right and negative value if the veloci va Value Units My Answers Give Up Submit Part B Determine the acceleration of the collar at this instant. Express your answer to three significant figures and include the appropriate units. Enter positive value if the acceleration is to the right and negative value if the acceleration is to the left. a Value Units Submit My Answers Give Up Conti Figure 1 v of 1 1028 PM a HE Search the web and Windows 2/15/2016Explanation / Answer
When motor draws in the cord then collar will start to move toward left.
The velocity and acceleration of the cord will remain same.
Now this cord is mlaking an angle with horizontal direction in which collar move , say angle is theta
Cos(theta) = 1.5/2
(a) now velocity of collar = VB Cos(theta) = 5.9*1.5 / 2 = - 4.425 m/s
-ve sign because it move toward left.
(b) Now acceleration = aBCos(theta) = 2*1.5 / 2 = - 1.5 m/s2