2. Which of the following best describes how constant velocity is shown in a speed-time graph? a line curving down c. a straight horizontal line а.

Part I. Shorter problems focused on the fundamentals a. For the image at the right, the coordinate angles are a = 57°, ẞ= 121°, y=49°, and the point along a-a is (15,-6,3). What is the angle between lines a-a and b-b? Z b-b B LL F a (x,y,z) a-a Y b. If the magnitude of the force, F-3121bf, what is the magnitude projected along the a-a axis? y

900 Determine the bar force in members Zo00 3; hi ; Jd 4 bc 00

answer this; The numerical value of ? can be calculated as  mm

(b) In Figure Q5, the 17 kg of circular disk is originally rotating with a clockwise angular velocity, o = 49 rad/s at the end of the link BC. Given the kinetic coefficient of friction, uk = 0.25 when the disk is then placed against the wall. (i) Draw the kinetic diagram of all forces exerted on the circular disk. (ii) Calculate the force of link BC. (iii) Calculate the angular acceleration of the circular disk. (iv) Calculate the time required to stop the motion of the circular disk,

Determine the following: x, y, Ix, Iy 1. y -240 mm 16 mm 12 mm 150 mm -10 mm 12 mm 16 mm 180 mm-

The 10-kg crate is subjected to a force having a constant direction and a magnitude F = 100 N. When s = 15 m, the crate is moving to the right with a speed of 8 m/s. Determine 1) The normal force between the crate and the ground. 2) Its speed when s = 25 m. %3D The coefficient of kinetic friction between the crate and the ground is mk = 0.25.