Lecture 9 Quiz PHYS2001

If each tug-of-war team pulls with a force of 1000 N, what is the tension in the rope?

• 1000 N

• 2000 N

• 0 N

What is the reading on the scale?

• 0 N

• 100 N

• 200 N

In both cases shown in the figure, an applied force of 100 N accelerates the 100-N block. What can be said about the acceleration of the block on the table in each case?

• They are equal.

• The acceleration in system A is greater than the acceleration in system B.

• The acceleration in system B is greater than the acceleration in system A.

Consider the following situation shown in the figure, where a woman is standing on a ladder that is leaning against a wall. Assume that the wall is frictionless, but the ground is not. Also assume the ladder and woman are not massless. How many forces should appear in the FBD for the ladder?

• 1

• 2

• 3

• 4

• 5

Two boxes have masses m₁ and m₂, and m₂ is greater than m₁. The boxes are being pushed across a frictionless horizontal surface. As the drawing shows, there are two possible arrangements to push them, and in each case, the pushing force F has the same magnitude. What can you say about the magnitude of the force the left block applies to the right one?

• It's larger in arrangement (a).

• It's larger in arrangement (b).

• It's the same in both cases.