所屬科目：工程力學(含靜力學、動力學與材料力學)
(2) (15 pts) determine the angular displacement θ in degrees for M = 20 N●m.
(2) (10 pts) Obtain the shear stress and plot the Mohr circle.
5. As shown in Figure 5, a 20-g bullet is fired at angle of 15° with the horizontal into a 4-kg wooden block and becomes embedded in it. Knowing that the block and bullet then move up the smooth incline of angle 15° for 1.5 seconds before they come to a stop, determine (1) the magnitude of the initial velocity vo of the bullet,(2) the magnitude of the impulse of the force exerted by the bullet on the block. (22 pts)
6. The motion of a uniform slender 2.4-kg rod AB is guided at A and C by collars of negligible mass (Figure 6). The system is released from rest in the positionθ = 45°. Ignore the friction between components and determine the angular velocity ω of rod AB whenθ = 35°. (28 pts)
阿摩線上測驗
登入
阿摩線上測驗
登入
and plot the Mohr circle.
