AP Physics 1
5.5 Rotational Equilibrium and Newton’s First Law in Rotational Form
5.3 Torque
2.4 Newton’s First Law
Multi-Unit
An \( 80 \, \text{kg} \) block is placed \( 2 \, \text{m} \) away from one end of a horizontal steel beam of length \( 6.6 \, \text{m} \) and mass \( 1{,}450 \, \text{kg} \). The beam makes contact with a vertical wall on one end (assume it does not slip). The other end of the beam, the end nearer the block, is attached to a massless cable that makes an angle of \( 30^\circ \) with the horizontal and ties into the vertical wall as well. Calculate the (1) tension force in the cable and (2) the total force the wall exerts on the beam.
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