- #1
nperk7288
- 17
- 0
I have two questions I'm stuck on:
Question 1:
1 block rests upon a horizontal surface with an identical second block resting on top of the first block. The coefficient of static friction between the blocks equals the coefficient of static friction between the lower block and the surface. A horizontal force is applied to the top block and when the force reaches 47.0 N the upper block begins to slide. The force is then removed and the blocks are put back in their original positions. What is the magnitude of the horizontal force that should be applied to the lower block so it just begins to slide out from under the upper block?
Question 2:
A damp washcloth is hung over the edge of a table and so part of it (mass = m on) is on the table and part (mass = m off) is hanging over the edge. The coefficient of static friction between table and wash cloth is 0.40. What is the maximum fraction ( m off / (m off + m on)) of the cloth that can hang over the edge without causing the cloth to fall?
Please, any insight would be appreciated...
Question 1:
1 block rests upon a horizontal surface with an identical second block resting on top of the first block. The coefficient of static friction between the blocks equals the coefficient of static friction between the lower block and the surface. A horizontal force is applied to the top block and when the force reaches 47.0 N the upper block begins to slide. The force is then removed and the blocks are put back in their original positions. What is the magnitude of the horizontal force that should be applied to the lower block so it just begins to slide out from under the upper block?
Question 2:
A damp washcloth is hung over the edge of a table and so part of it (mass = m on) is on the table and part (mass = m off) is hanging over the edge. The coefficient of static friction between table and wash cloth is 0.40. What is the maximum fraction ( m off / (m off + m on)) of the cloth that can hang over the edge without causing the cloth to fall?
Please, any insight would be appreciated...