2 As shown in Figure 2 the ends of the 500mm lik AB move in

2. As shown in Figure 2, the ends of the 500mm lik AB move in horizontal and vertical guides. If at the instant shown, vA : 1.5 mis to the left when the angle ?-30, determine the velocities of B and the midpoint E of link AB. Figure 2.

Solution

Resolving V_a into components will give us V_e and V_b

_{Va Cos30⁰ = Ve}

_{Therefore, Ve= 1.5*cos30⁰ = 1.299 m/s}

_{Va Sin30⁰ = Vb}

Therefore, Ve= 1.5*sin30⁰ = 0.75 m/s