A uniform horizontal beam 5.00 m long and weighing 3Γ10^2π is attached to a wall by a pin connection that allows the beam to rotate. Its far end is supported by a cable that makes an angle of 53 degrees with the horizontal. If a person weighing 6Γ10^2π stands 1.50 m from the wall, find the magnitude of the tension in the cable and the force π exerted by the wall on the beam.
If you drop a rock off a cliff and it hits the ground 4 seconds later, how tall is that cliff?
With damped oscillations, the displacement from the equilibrium position changes with time according to the law: