Explanation Draw the schematic diagram of the system as shown in Figure (1). Write the expression for the velocity of point A in vector form. v A = v B + v A / B = v A + ( ω × r A / B ) (I) Here, velocity of point A in vector form is v A , velocity of point B in vector form is v B , velocity of point A with respect to point B in vector form is v A / B , angular velocity of the link AB in vector form is ω and position vector of point A with respect to point B is r A / B . Write the expression for the normal acceleration of point A with respect to point B in vector form. ( a A / B ) n = ω × ( ω × r B / A ) (II) Here, normal acceleration of point A with respect to point B in vector form is ( a A / B ) n . Write the expression for the tangential acceleration of point A with respect to point B in vector form. ( a A / B ) t = α × r B / A (III) Here, tangential acceleration of point A with respect to point B in vector form is ( a A / B ) t and angular acceleration of the link AB in vector form is α . Write the expression for the linear acceleration of point A in vector form. a A = a B + ( a B / A ) n + ( a B / A ) t (IV) Here, acceleration of point A in vector form is a A and acceleration of point B in vector form is a B . Conclusion: Write the expression for the angular velocity of the link AB in vector form using the right hand rule. ω = ω k Here, angular velocity of the link AB is ω and unit vector along z -direction is k . Write the expression for the velocity of point A in vector form using the right hand rule. v A = v A i Here, velocity of point A is v A and unit vector along x direction is i . Calculate the position vector of point A with respect to point B . r A / B = − ( A C ¯ ) i + ( C B ¯ ) j (V) Here, distance between point A and C is A C ¯ , distance between point C and B is C B ¯ and unit vector along y -direction is j . Substitute 0.3 m for A C ¯ and 0.4 m for C B ¯ in Equation (V). r A / B = − ( 0.3 m ) i + ( 0.4 m ) j = − 0.3 i + 0.4 j m Here, velocity of point A is v A and unit vector along x direction is i . Calculate the velocity of point B in vector form. v B = − ( O B ¯ ) θ ˙ j (VI) Here, distance between point O and B is O B ¯ and angular velocity is θ ˙ . Substitute 0.4 m for O B ¯ and 4 rad / s for θ ˙ in Equation (VI). v B = − ( 0.4 m ) ( 4 rad / s ) j = − 1.6 j m / s Substitute − 1.6 j m / s for v B , v A i for v A , − 0.3 i + 0.4 j m for r A / B and ω k for ω in Equation (I). v A i = − 1.6 j m / s + ( ω k × − 0.3 i + 0.4 j m ) = − 0.4 ω i + ( − 1.6 − 0.3 ω ) j (VII) Compare coefficients of j in Equation (VII). 0 = − 1.6 − 0.3 ω ω = − 1.6 0.3 = − 5.33 rad / s Compare coefficients of i in Equation (VII). v A = − 0.4 ω Substitute − 5.33 rad / s for ω . v A = − 0.4 ( − 5.33 rad / s ) = 2.13 rad / s Write the expression for the normal acceleration of point B in vector form

8th Edition

ISBN: 9781118885840

Author: James L. Meriam, L. G. Kraige, J. N. Bolton

Publisher: WILEY

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Chapter 5.6, Problem 133P

To determine

The angular acceleration of link AB.

The linear acceleration of point A.

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Chapter 5.6, Problem 132P

Chapter 5.6, Problem 134P

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Chapter 5 Solutions

Engineering Mechanics: Dynamics

Ch. 5.2 - Prob. 1P Ch. 5.2 - The circular sector rotates about a fixed axis...Ch. 5.2 - Prob. 3P Ch. 5.2 - Prob. 4P Ch. 5.2 - When switched on, the grinding machine accelerates...Ch. 5.2 - The small cart is released from rest in position 1...Ch. 5.2 - The flywheel has a diameter of 600 mm and rotates...Ch. 5.2 - Prob. 8P Ch. 5.2 - Prob. 9P Ch. 5.2 - The angular acceleration of a body which is...

Ch. 5.2 - The device shown rotates about the fixed z-axis...Ch. 5.2 - Prob. 12P Ch. 5.2 - The T-shaped body rotates about a horizontal axis...Ch. 5.2 - Prob. 14P Ch. 5.2 - Prob. 15P Ch. 5.2 - Prob. 16P Ch. 5.2 - The bent flat bar rotates about a fixed axis...Ch. 5.2 - At time t = 0, the arm is rotating about the fixed...Ch. 5.2 - A variable torque is applied to a rotating wheel...Ch. 5.2 - Prob. 20P Ch. 5.2 - Prob. 21P Ch. 5.2 - Prob. 22P Ch. 5.2 - Prob. 23P Ch. 5.2 - Prob. 24P Ch. 5.2 - Prob. 25P Ch. 5.2 - During its final spin cycle, a front-loading...Ch. 5.2 - Prob. 27P Ch. 5.2 - Prob. 28P Ch. 5.3 - Slider A moves in the horizontal slot with a...Ch. 5.3 - The fixed hydraulic cylinder C imparts a constant...Ch. 5.3 - Prob. 31P Ch. 5.3 - At the instant under consideration, the hydraulic...Ch. 5.3 - The hydraulic cylinder D is causing the distance...Ch. 5.3 - The Scotch-yoke mechanism converts rotational...Ch. 5.3 - Prob. 35P Ch. 5.3 - The wheel of radius r rolls without slipping, and...Ch. 5.3 - Link OA rotates with a clockwise angular velocity...Ch. 5.3 - Determine the acceleration of the shaft B for θ =...Ch. 5.3 - Prob. 39P Ch. 5.3 - Prob. 40P Ch. 5.3 - Boom OA is being elevated by the rope-and-pulley...Ch. 5.3 - The hydraulic cylinder imparts a constant upward...Ch. 5.3 - Prob. 43P Ch. 5.3 - The rod OB slides through the collar pivoted to...Ch. 5.3 - Prob. 45P Ch. 5.3 - Prob. 46P Ch. 5.3 - Link OA is given a clockwise angular velocity ω =...Ch. 5.3 - Prob. 48P Ch. 5.3 - Derive an expression for the upward velocity v of...Ch. 5.3 - Prob. 50P Ch. 5.3 - Show that the expressions v = rω and at = rα hold...Ch. 5.3 - Prob. 52P Ch. 5.3 - Prob. 53P Ch. 5.3 - Prob. 54P Ch. 5.3 - Prob. 55P Ch. 5.3 - Prob. 56P Ch. 5.3 - Prob. 57P Ch. 5.3 - The punch is operated by a simple harmonic...Ch. 5.4 - The right-angle link AB has a clockwise angular...Ch. 5.4 - The uniform rectangular plate moves on the...Ch. 5.4 - The cart has a velocity of 4 ft/sec to the right....Ch. 5.4 - Prob. 62P Ch. 5.4 - The speed of the center of the earth as it orbits...Ch. 5.4 - Prob. 64P Ch. 5.4 - The circular disk of radius 8 in. is released very...Ch. 5.4 - For a short interval, collars A and B are sliding...Ch. 5.4 - Prob. 67P Ch. 5.4 - The magnitude of the absolute velocity of point A...Ch. 5.4 - Prob. 69P Ch. 5.4 - Prob. 70P Ch. 5.4 - Determine the angular velocity of bar AB just...Ch. 5.4 - For the instant represented, point B crosses the...Ch. 5.4 - Prob. 73P Ch. 5.4 - For a short interval, collars A and B are sliding...Ch. 5.4 - Determine the angular velocity of link BC for the...Ch. 5.4 - The elements of a switching device are shown. If...Ch. 5.4 - Determine the angular velocity ωAB of link AB and...Ch. 5.4 - Determine the angular velocity ωAB of link AB and...Ch. 5.4 - The rotation of the gear is controlled by the...Ch. 5.4 - Prob. 80P Ch. 5.4 - Prob. 81P Ch. 5.4 - The ends of the 0.4-m slender bar remain in...Ch. 5.4 - Prob. 83P Ch. 5.4 - Prob. 84P Ch. 5.4 - Pin P on the end of the horizontal rod slides...Ch. 5.4 - A four-bar linkage is shown in the figure (the...Ch. 5.4 - The mechanism is part of a latching device where...Ch. 5.4 - The elements of the mechanism for deployment of a...Ch. 5.4 - Prob. 89P Ch. 5.4 - Prob. 90P Ch. 5.5 - The slender bar is moving in general plane motion...Ch. 5.5 - Prob. 92P Ch. 5.5 - Prob. 93P Ch. 5.5 - Roller B of the quarter-circular link has a...Ch. 5.5 - Prob. 95P Ch. 5.5 - Prob. 96P Ch. 5.5 - Prob. 97P Ch. 5.5 - At a certain instant vertex B of the...Ch. 5.5 - Prob. 99P Ch. 5.5 - Prob. 100P Ch. 5.5 - The mechanism of Prob. 5/100 is now shown in a...Ch. 5.5 - Prob. 102P Ch. 5.5 - Prob. 103P Ch. 5.5 - The switching device of Prob. 5/76 is repeated...Ch. 5.5 - The shaft of the wheel unit rolls without slipping...Ch. 5.5 - Prob. 106P Ch. 5.5 - The attached wheels roll without slipping on the...Ch. 5.5 - The mechanism of Prob. 5/77 is repeated here. By...Ch. 5.5 - Prob. 109P Ch. 5.5 - Prob. 110P Ch. 5.5 - Prob. 111P Ch. 5.5 - Prob. 112P Ch. 5.5 - Prob. 113P Ch. 5.5 - Solve for the speed of point D in Prob. 5/64 by...Ch. 5.5 - Link OA has a counterclockwise angular velocity =...Ch. 5.5 - Vertical oscillation of the spring-loaded plunger...Ch. 5.5 - A device which tests the resistance to wear of two...Ch. 5.5 - Motion of the roller A against its restraining...Ch. 5.5 - In the design of the mechanism shown, collar A is...Ch. 5.5 - Determine the angular velocity ω of the ram head...Ch. 5.6 - For the instant represented, corner C of the...Ch. 5.6 - The two rotor blades of 800-mm radius rotate...Ch. 5.6 - Prob. 123P Ch. 5.6 - Determine the angular velocity and angular...Ch. 5.6 - The wheel of radius R rolls without slipping, and...Ch. 5.6 - The 9-m steel beam is being hoisted from its...Ch. 5.6 - The bar of Prob. 5/82 is repeated here. The ends...Ch. 5.6 - Prob. 128P Ch. 5.6 - Prob. 129P Ch. 5.6 - Prob. 130P Ch. 5.6 - Prob. 131P Ch. 5.6 - Prob. 132P Ch. 5.6 - Prob. 133P Ch. 5.6 - The switching device of Prob. 5/76 is repeated...Ch. 5.6 - Prob. 135P Ch. 5.6 - Prob. 136P Ch. 5.6 - If the wheel in each case rolls on the circular...Ch. 5.6 - Prob. 138P Ch. 5.6 - The system of Prob. 5/101 is repeated here. Crank...Ch. 5.6 - Prob. 140P Ch. 5.6 - The mechanism of Prob. 5/77 is repeated here. The...Ch. 5.6 - The system of Prob. 5/84 is repeated here. If the...Ch. 5.6 - The shaft of the wheel unit rolls without slipping...Ch. 5.6 - Plane motion of the triangular plate ABC is...Ch. 5.6 - The system of Prob. 5/110 is repeated here. At the...Ch. 5.6 - The velocity of roller A is vA = 0.5 m/s to the...Ch. 5.6 - In the design of this linkage, motion of the...Ch. 5.6 - The mechanism of Prob. 5/112 is repeated here. If...Ch. 5.6 - The bar AB from Prob. 5/74 is repeated here. 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The angular acceleration of link AB . The linear acceleration of point A .

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The angular acceleration of link AB. The linear acceleration of point A.

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Chapter 5 Solutions

The angular acceleration of link AB.

The linear acceleration of point A.