A 365 kg mass is supported on a wire attached to a 15 m longsteel bar that is pivoted at a vertical wall and supported by acable. The mass of the bar is 95 kg. (Take right and up to bepositive.)
a) With the cable attached to the bar 5.0 m from the lower end asshown, find the tension in the cable.
Find the force exerted by the wall on the steel bar.
(b) A somewhat longer cable replaces the old and is attached to thesteel bar 5.0 m from its upper end, connecting to the same place onthe wall as before and maintaining the same angle between the barand the wall. Find the tension in the cable.
Find the force exerted by the wall on the steel bar.
A 365 kg mass is supported on a wire attached to a 15 m longsteel bar that is pivoted at a vertical wall and supported by acable. The mass of the bar is 95 kg. (Take right and up to bepositive.)
a) With the cable attached to the bar 5.0 m from the lower end asshown, find the tension in the cable.
Find the force exerted by the wall on the steel bar.
(b) A somewhat longer cable replaces the old and is attached to thesteel bar 5.0 m from its upper end, connecting to the same place onthe wall as before and maintaining the same angle between the barand the wall. Find the tension in the cable.
Find the force exerted by the wall on the steel bar.
Related textbook solutions
Related questions
A uniform steel beam of length 
and mass 
is attached via a hinge to the side of a building. The beam is supported by a steel cable attached to the end of the beam at an angle 
, as shown. Through the hinge, the wall exerts an unknown force, 
, on the beam. A workman of mass 
sits eating lunch a distance 
from the building.
| Part A | |
|---|---|
|
Find
 , the tension in the cable. Remember to account for all the forces in the problem |
|
Part B
Find 
, the x-component of the force exerted by the wall on the beam ( ), using the axis shown. Remember to pay attention to the direction that the wall exerts the force.
