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As shown in the figure above, a thin horizontal bar AB of negligible weight and length L = 6.4 m is pinned to a vertical wall at A and supported at B by a thin wire BC that makes an angle θ = 32o with the horizontal. A weight W = 300 N can be moved anywhere along the bar; its position is defined by the distance x from the wall to its center of mass.
As a function of x, find the tension in the wire, and the horizontal and vertical components of the force exerted on the bar by the pin at A.
If x = 2.98 m, what is the tension?
If x = 2.98 m, what is the magnitude of the horizontal component of the force exerted by the pin?
If x = 2.98 m, what is the magnitude of the vertical component of the force exerted by the pin?
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A firm wants to calculate the amount of frictional torque in their current line of grindstones; therefore they can redesign them to be more energy efficient. Find what is the frictional torque exerted on the grindstone
A uniform rod ( L = 3.0 meter) and mass (M = 1.0 kilogram) is pivoted about a horizontal frictionless pin through one end. Determine what is the angular speed of the rod
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