- #1

c0der

- 54

- 0

## Homework Statement

Attached

## Homework Equations

Attached

## The Attempt at a Solution

2ac + 3 = 0 => ac = 1.5m/s^2 upwards

For FBD of C, Newton's 2nd law

2T - 200g = 200*1.5 => T = 1131N

For FBD of the beam,

Take moments about A, and assume beam is rigid (CCW positive):

2.5T - 3T - 300*6*9.81*3 + Rb*6 = 0

RB = 8.92kN upwards

Ra + Rb + T - T - 300*9.81*6 = 0 => RA = 8.73kN

Is this correct? I don't see why the solution is posting the velocity when asking for a reaction