4. A solid metal pipe of mass 100 kg and length 7 m is placed on a truck as shown in the figure. Calculate the maximum acceleration of the truck when the metal pipe remains in contact with point A. B 7m m

An inclined plane of angle e = 20.0° has a spring of force constant k = 510 N/m fastened securely at the bottom so that the spring is parallel to the surface as shown in the figure below. A block of mass m = 2.61 kg is placed on the plane at a distance d = 0.297 m from the spring. From this position, the block is projected downward toward the spring with speed v = 0.750 m/s. By what distance is the spring compressed when the block momentarily comes to rest?

For the circular thin plate with a square hole as shown in the image below, its radius R = 0.32 m and the side of the square /= 0.18 m, and the material has a mass per unit area of 12 kg/m². If at the instant shown, it is subjected to a force P = 30 N, and has a counterclockwise angular velocity of W = 4.2 rad/s, determine magnitude of the support reaction at point O at this instant. Please pay attention: the numbers may change since they are randomized. Your answer must include 2 places after the decimal point, and proper unit. Take g = 9.81 m/s². R @ Your Answer: Answer units P

The figure shows a system composed of two bodies, of masses mi and m2, connected through an ideal rope that passes through a pulley, also ideal. Both bodies are on two inclined planes, with the same angle of inclination 0, and coefficients of friction 1 and 2. If mi < m2, find the acceleration of the system. m₂