Point B of a pendulum of mass m and length I has a constant horizontal acceleration a. If the pendulum is released from rest relative to the moving system with = 0, determine the expression for the tension T in the cord as a function of 0. a B 0 A

1) A loaded wheelbarrow is pulled to the left with an acceleration a = 2 m / s? by a force P. In this motion, the wheelbarrow does not rotate and the force of friction as well as the effect of the rotation of the wheel may be neglected. The combined mass of the wheelbarrow and its load is 250 kg with center of mass at G. For this instant, determine the horizontal and vertical components of the force P and the normal reaction at B. a P G beal 60 cm 50 cm 1 m 20 cm

The slider of mass m is released from rest in position A and slides without friction along the vertical‐plane guide shown. Determine the height h such that the normal force exerted by the guide on the slider is zero as the slider passes point C. For this value of h, determine the normal force as the slider passes point B.

3/169 The 3-kg sphere is carried by the parallelogram linkage where the spring is unstretched when = 90°. If the mechanism is released from rest at 0 = 90°, calculate the velocity v of the sphere when the position = 135° is passed. The links are in the vertical plane, and their mass is small and may be neglected. 0 I.. 500 mm www 3 kg wˇˇˇˇˇˇˇˇˇˇwwwwww k = 100 N/m 500 mm I.. 500 mm Problem 3/169