How were drawbridges and portcullises used tactically?
2020年12月8日 · The drawbridge is a routine, minimal, defense (drawn up nightly for example) intended against attack mainly to provide time to lower the inner portcullis. The fortification is the headquarters of the defender's territory, such as a capital city; and/or. It's seen as a status symbol: "Look! a drawbridge! Aren't I just the coolest Baron, with the ...
Solved Friction Force on a Dancer on a Drawbridge A dancer
Express your answer in terms of some or all of the variables and/or . The angle should not appear in your answer View Available Hint(s) 7 PM ® 3 of 10 Review Part B (Figure 2)The drawbridge then starts to rise. The dancer continues to stand on one leg. The drawbridge stops just at the point where the dancer is on the verge of slipping.
High Quality SOLUTION A uniform drawbridge must be held at a …
A uniform drawbridge must be held at a 3 7 ∘ angle above the horizontal to allow ships to pass underneath. The drawbridge weighs 4 5, 0 0 0 N and is 1 4. 0 m long. A cable is connected 3. 5 m from the hinge where the bridge pivots (measured along the bridge) and pulls horizontally on the bridge to hold it in place.
Solved A loaded cement mixer drives onto an old drawbridge
A loaded cement mixer drives onto an old drawbridge, where it stalls with its center of gravity three-quarters of the way across the span. The truck driver radios for help, sets the handbrake, and waits. Meanwhile, a boat approaches, so the drawbridge is raised by means of a cable attached to its end opposite the hinge (see figure).
2. A truss drawbridge is pinned to its support at | Chegg.com
- The drawbridge (line HP) currently makes an angle of θ with respect to the horizontal. - Three external forces are applied: F 1 at O, F 2 at L, and F 3 at L. - A counterbalance weight, W CB , is attached to point P by a cable. - The length of each link is given in the table. 2. A truss drawbridge is pinned to its support at point N. Tt ...
Solved A dancer is standing on one leg on a drawbridge that
A dancer is standing on one leg on a drawbridge that is about to open. The coefficients of static and kinetic friction between the drawbridge and the dancer's foot are mu_s and mu_k, respectively, n represents the normal force exerted on the dancer by the bridge, and FR represents the gravitational force exerted on the dancer, as shown in the drawing (Figure 1).
Solved Part D: Drawbridge Consider a wooden drawbridge being
The drawbridge is attached to the wall by a hinge at the bottom left. 6. Draw a FBD for the wooden drawbridge. (3 pts.) Castle Wall -Pulley Winch Wooden Drawbridge Hinge Part E: Stacked Blocks Consider the system of blocks shown below (from Problem 7.49 in the textbook). Assume all surfaces have friction and that the system is not moving. 7.
Solved Question 3 (24 pts Consider the drawbridge pictured - Chegg
The drawbridge is held stationary at an angle of 30 above the horizontal by a rope that attaches 1.20 m from the end of the bridge. The rope makes an angle of 20° with horizontal. a) (10 points) Draw an extended free-body diagram pir whil gine is 20° for the bridge.
Solved A dancer is standing on one leg on a drawbridge that
A dancer is standing on one leg on a drawbridge that is about to open. The coefficients of static and kinetic friction between the drawbridge and the dancer's foot are μs and μk, respectively. n⃗ represents the normal force exerted on the dancer by the bridge, and F⃗ g represents the gravitational force exerted on the dancer, as shown in the drawing.(Figure 1) For all the …
Where is (or was) the biggest medieval drawbridge?
2017年12月13日 · The south east drawbridge is of oak, with timbers 2.9m wide and 203mm thick. The north east one is similar but a little narrower. They are raised every night and lowered every morning, just as they have been since 1510. So the drawbridge only reaches out 2.75m(9ft) although the moat was 18m(~60ft) wide.