A drawbridge has mass M and length L and is approximately uniform. It has a hinge at the right end, and is being pulled up via a cable (FT) that is pointed 45 degrees up from “to the right” and is connected at L/3 from the left end. Assume that the tension is just enough that there’s no normal force at the left end of the bridge. Draw a torque diagram for the bridge, with the hinge as the pivot point. Assume it is stationary and not accelerating.

Problem 4: The wall crane supports a load of 800 lb. Determine the horizontal and vertical components of reaction at the pins A and D. Also, what is the force in the cable at the winch W? 4 ft- E W 800 lb

A transmission tower is held by three guy wires attached to a pin at A and anchored by bolts at B, C, and D. If the tension in wire AB is 630 lb, determine the vertical force P exerted by the tower on the pin at A.

Lecture 2 A triangular roof frame consists of a horizontal tie rod and two rafters at inclined at 300 and 60⁰ respectively to the horizontal and is supported at the ends. It carries a load of 4 KN at the apex, determine the resulting thrusts in the rafters, the tension in the tie rod and the reaction at the supports. Using Lami's theorem N j at 30/ K X 4 KN raf 60

A cantilever beam has a span of 2 m. and having a flexural rigidity of 40000 kN.m². At the free end of the beam there is a spring with a clearance of 200 mm below the beam. Spring constant is 252 N/m. #13 0.20 m #14 Find the force acting on the spring after a concentrated load of 800 kN is applied at the force end. #15 Compute the moment at the fixed end. Compute the deflection of the spring after a concentrated load of 800 KN is applied at the free end of the beam. P=800 KN

1. A frame held taut by a rope connected at D and E, is pin connected at B. If 1500 N is perpendicular to the member AB, determine the tension on the rope and the horizontal and vertical components of forces at B. Assume roller connection at A. 2000 N 2 m Fim--1 m- 1500 N 2 m 2 m 45° A

Solve a

1. The truck is moving along a 15 m span of beam. The front axle is 16 kN, the middle is 36 kN and the rear is 26 kN. The middle load is space 3m from the front and 6 m from the rear. a. Determine the moment under each axle. b. Calculate the maximum moment produced by the load. c. Calculate the maximum shear. 26 kN 36 kN 16 kN 6 m 3 m A 15 m

Given a truss system below analyse it using Graphical Method, (a) Determine the directions and values of the reactions (b) The types and magnitude of the forces in all the members Note: All dimensions are in meters. B 3.00 3.00 ய Necessary data: X (kN) 60 3.00- -30°