11.66 *** One end of a uniform meter stick is placed against a vertical wall (Fig. P11.66). The Figure P11.66 other end is held by a lightweight cord that makes an angle 0 with the stick. The coefficient of static friction between the end of the meter stick and the wall is 0.40. (a) What is the maximum value the angle 0 can have if the stick is to remain in equilib- rium? (b) Let the angle e be 15°. A block of the same weight as the meter stick is suspended from the stick, as shown, at a distance x from the wall. What is the minimum value of x for which the stick will remain in equilibrium? (c) When e = 15°, how large must the coefficient of static friction be so that the block can be attached 10 cm from the left end of the stick without causing it to slip?
11.66 *** One end of a uniform meter stick is placed against a vertical wall (Fig. P11.66). The Figure P11.66 other end is held by a lightweight cord that makes an angle 0 with the stick. The coefficient of static friction between the end of the meter stick and the wall is 0.40. (a) What is the maximum value the angle 0 can have if the stick is to remain in equilib- rium? (b) Let the angle e be 15°. A block of the same weight as the meter stick is suspended from the stick, as shown, at a distance x from the wall. What is the minimum value of x for which the stick will remain in equilibrium? (c) When e = 15°, how large must the coefficient of static friction be so that the block can be attached 10 cm from the left end of the stick without causing it to slip?
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Transcribed Image Text:11.66 ** One end of a uniform Figure P11.66
meter stick is placed against a
vertical wall (Fig. P11.66). The
other end is held by a lightweight
cord that makes an angle 0 with
the stick. The coefficient of
static friction between the end
of the meter stick and the wall is
0.40. (a) What is the maximum
value the angle e can have if
the stick is to remain in equilib-
rium? (b) Let the angle 0 be 15°. A block of the same weight as the
meter stick is suspended from the stick, as shown, at a distance x
from the wall. What is the minimum value of x for which the stick
will remain in equilibrium? (c) When 0 = 15°, how large must the
coefficient of static friction be so that the block can be attached
10 cm from the left end of the stick without causing it to slip?
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