A solid block is pulled by forces F1=20 N and F2 = 10 N
respectively. Find the magnitude and direction of force of
static friction, if the limiting force of friction is F = 20 N
between block and floor.
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The light is visible only when all the three pinholes are aligned proving the rectilinear propagation of light. From this experiment, we can deduce that light moves from place to place through rectilinear propagation. Rectilinear is a fancy word for straight. Light travels from the source in a straight line.
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