Ahorizontal aluminum rod 4.8 cm in diameter projects 5.6 cm from a wall. a 1200 kg object is suspended from the end of the rod. the shear modulus of aluminum is 3.0 ? 1010 n/m2. neglect the rod's mass.(a) find the shear stress on the rod. (n/m2)(b) find the vertical deflection of the end of the rod. (m)

Emmy kicks a soccer ball up at an angle of 45° over a level field. she watches the ball's trajectory and notices that it lands, two seconds after being kicked, about 20 m away to the north. assume that air resistance is negligible, and plot the horizontal and vertical components of the ball's velocity as a function of time. consider only the time that the ball is in the air, after being kicked but before landing. take "north" and "up" as the positive ‑ and ‑directions, respectively, and use ≈10 m/s2 for the downward acceleration due to gravity.