A shop sign weighing 245N is supported by a uniform 155N beam. Find the tension in the guy wire and the horizontal and vertical forces exerted by the hinge on the beam
708N, 580N, -6N
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A shop sign weighing 245N is supported by a uniform 155N beam. Find the tension in the guy wire and the horizontal and vertical forces exerted by the hinge on the beam (708N, 580N, -6N)
The forces acting on the beam are shown.
Resolving tension T in the guy wire resolved in horizontal and vertical directions gives horizontal component T cos 35o to the left and Tsin 35o upwards.
Considering equilibrium in horizontal direction we get
Considering equilibrium in vertical direction we get
Or ------------- (2)
Equating moments (torque) of the forces about hinge point we get
Or T = 406/sin 35o = 708 N
Substituting the value of T in equations (1) and (2) we get
The tires of a car make 85 revolutions as the car reduces its speed uniformly from 90km/h to 60km/h. THE tires have a diameter of .90m
a) What was the angular acceleration of each tire?
Like equations of motion for translational motion we can write ...
In the following posting, the final moments of inertia are examined for weighing a stop sign.