Chapter 16, Problem 103P

The plate OAB forms an normal and tangential components of acceleration of the centroid C at a certain instant are 65 m/s2 and 27 m/s2, respectively, determine the values of equilateral triangle which rotates counterclockwise with increasing speed about point O. If the and at this same instant. The angle 0 is the angle between line AB and the fixed horizontal axis and the distance b 180 mm. b b b Answers: rad/s rad/s2

Consider the portion of an excavator shown. At the instant under consideration, the hydraulic cylinder is extending at a rate of 9 in./sec, which is decreasing at the rate of 3 in./sec every second. Simultaneously, the cylinder is rotating about a horizontal axis through O at a constant rate of 15 deg/sec. Determine the velocity v and acceleration a of the clevis attachment at B. Determine the r and 9-components of velocity and acceleration. 2.5 3.6 A 37° Answers: V, = i in./sec Ve = i in./sec in/sec? ag = in./sec2 i i

Consider the portion of an excavator shown. At the instant under consideration, the hydraulic cylinder is extending at a rate of 6 in./sec, which is decreasing at the rate of 2 in./sec every second. Simultaneously, the cylinder is rotating about a horizontal axis through O at a constant rate of 14 deg/sec. Determine the velocity v and acceleration a of the clevis attachment at B. Answers: v=i a = ( 3.7' 38⁰ 2.8' A i e, + i B eg) in./sec ee) in./sec²

Pravinbhai

Consider the portion of an excavator shown. At the instant under consideration, the hydraulic cylinder is extending at a rate of 7 in./sec, which is decreasing at the rate of 3 in./sec every second. Simultaneously, the cylinder is rotating about a horizontal axis through O at a constant rate of 14 deg/sec. Determine the velocity v and acceleration a of the clevis attachment at B.

If the compact disc is spinning at a constant angular rate θ˙ = 445 rev/min, determine the magnitudes of the accelerations of points A and B at the instant shown. Determine the magnitudes of the velocities of points A and B.

Consider the portion of an excavator shown. At the instant under consideration, the hydraulic cylinder is extending at a rate of 5 in./sec, which is decreasing at the rate of 2 in./sec every second. Simultaneously, the cylinder is rotating about a horizontal axis through O at a constant rate of 13 deg/sec. Determine the velocity v and acceleration a of the clevis attachment at B. Determine the r- and θ-components of velocity and acceleration. Answers: vr =  in./sec vθ =  in./sec ar =  in./sec2 aθ =  in./sec2

An external drive system actuates the mechanism by applying a moment M at bearing D. At the instant 0 = 45°, the magnitude of the velocity vector of point C is 10 m and the angular acceleration of link CD is 35 rad in the CCW direction. Determine the y-component of the acceleration vector of point C in m at this instant. Consider L 6 metres. E AO

Consider the portion of an excavator shown. At the instant under consideration, the hydraulic cylinder is extending at a rate of 8 in./sec, which is decreasing at the rate of 3 in./sec every second. Simultaneously, the cylinder is rotating about a horizontal axis through O at a constant rate of 15 deg/sec. Determine the velocity v and acceleration a of the clevis attachment at B. 2.2' 2.9' A 420