Question

One end of a uniform meter stick is placed against a vertical wall as shown in (Figure 1) . The other end is held by a lightweight cord that makes an angle θ with the stick. The coefficient of static friction between the end of the meter stick and the wall is 0.38.

What is the maximum value the angle θ can have if the stick is to remain in equilibrium?

Let the angle between the cord and the stick is θ = 18°. A block of the same weight as the meter stick is suspended from the stick, as shown at (Figure 2), at a distance x from the wall. What is the minimum value of x for which the stick will remain in equilibrium?

When θ = 118°, how large must the coefficient of static friction be so that the block can be attached 15 cm from the left end of the stick without causing it to slip?

Answer 1