[PHYSICS 351] - Midterm Exam Guide - Comprehensive Notes for the exam (21 pages long!)

A 1000 kg drawbridge is kept at an elevated state by a chainattached to the castle wall right above the end of the bridge thatforms a 90 degree angle with the bridge. The length of the bridgeis 3.00 m; the length of the chain is 4.00 m.
a) Find the tension in the chain.
b) Find the magnitude and direction of the force exerted on thebridge by the hinge.

Please help. I have a physics exam, and this is the practiceexam.

Is it just me or can you not see any of the "ExpertReviewed"problems (I'm looking at "Fundamentals of Physics, 8thed.)?

17. A wheel 2.00 m in diameter lies in a vertical plane and rotatesabout its central axis with a constant angular acceleration of 4.00rad/s^2. The wheel starts at rest at t = 0, and the radius vectorof a certain point P on the rim makes an angle of 57.3? with thehorizontal at this time. At t = 2.00 s, find:
(a) the angular speed of the wheel and, for point P
(b) the tangential speed
(c) the total acceleration
(d) the angular position.

this problem came from Physics For Scientists And Engineers withModern Physics (8th): chapter 10