Author Question: A 2.0-kg block slides on a rough horizontal surface. A force (P = 6.0 N) is applied to the block as ... (Read 281 times)

yoroshambo · **on:** Jul 28, 2018

A 2.0-kg block slides on a rough horizontal surface. A force (P = 6.0 N) is applied to the block as shown. The magnitude of the block's acceleration is 1.2 m/s2. What is the magnitude of the force of friction acting on the block?

a.
2.0 N

b.
1.4 N

c.
1.6 N

d.
2.8 N

e.
3.4 N

Question 2

A rock attached to a string swings in a vertical circle. Which free-body diagram could correctly describe the force(s) on the rock when it is at the lowest point, where

is the normal force,

is weight, and

is tension?

a.

b.

c.

d.

e.