A 3.0 ft horizontal bar is fixed at its left end in a wall. To bend it clockwise, a clockwise torque of 300 lb-ft is required. This torque can be generated if at 2.0ft from the wall (or the bending point), the beam is: a. pushed down with a 150 lb force.
b. pushed down with a 50 lb force.
c. pushed down with a 100 lb force.

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myth. it was once thought that animals, including cats and dogs, could only see in black and white. however, scientists have proven this to be a myth. in all animals, including humans, the perception of colour is determined by the presence of cells in the eye called cone photoreceptors.