Situation 1: Block A is pushed to the right on a smooth surface. Situation 2: Bl

Question

Situation 1: Block A is pushed to the right on a smooth surface. Situation 2: Block A is pushed to the right on a rough surface. The blocks areat rest, and force F is smaller than the maximumstatic friction force on A. Situation 3: Block B is pushed to the left. The blocks move at constantspeed.
For each of the forces described in the left column below, put thethree situations in order from largest to smallest. Also, indicateif two situations are equal. So, for instance, to put in order thekinetic friction force exerted on block A by the floor, you wouldtype "3>1=2". (The kinetic friction force is equal to zero insituations 1 and 2, and it's non-zero in situation 3.) FORCE ORDER (**) a. Net force exerted on block A (**) b. Normal force exerted on block B by the floor (**) c. Total friction force exerted on blocks A and B (**) d. Air resistance force exerted on block A FORCE ORDER (**) a. Net force exerted on block A (**) b. Normal force exerted on block B by the floor (**) c. Total friction force exerted on blocks A and B (**) d. Air resistance force exerted on block A Situation 1: Block A is pushed to the right on a smooth surface. Situation 2: Block A is pushed to the right on a rough surface. The blocks areat rest, and force F is smaller than the maximumstatic friction force on A. Situation 3: Block B is pushed to the left. The blocks move at constantspeed.

Explanation / Answer

b) None of the blocks are flying away, and the blocks are thesame size. Therefore, the normal force should be the same forall. c) Remember to take into account both kinetic friction and thefriction caused by the surface they're pushing against. d) There is only one situation in which A encounters any airresistance- just think about the way in which the blocks are moving(or aren't moving).

Related Questions

Navigate

• Browse (All)
• Browse S
• Subjects

---