A block moving to the right on a level surface with friction is pulled by an increasing horizontal force also directed to the right. As the applied force increases, which of the following is true of the normal force and the frictional force on the block? Normal forceFrictional Force a. IncreasesIncreases b. IncreasesRemains Constant c. Remains ConstantIncreases d. Remains ConstantDecreases e. Remains ConstantRemains Constant

Question

Kristin Holder

Physics

26 December, 09:03

A block moving to the right on a level surface with friction is pulled by an increasing horizontal force also directed to the right. As the applied force increases, which of the following is true of the normal force and the frictional force on the block? Normal forceFrictional Force a. IncreasesIncreases b. IncreasesRemains Constant c. Remains ConstantIncreases d. Remains ConstantDecreases e. Remains ConstantRemains Constant

+1

Answers (1)

Know the Answer?

Liam Porter · Answer 1

e) True Yes both are constant

Explanation:

Let us propose the solution of the problem before reviewing the statements, we use Newton's second law

F - fr = m a

N - W = 0

N = mg

The equation for the force of friction is

fr = μ N

F - μ mg = m a

F = m (a - μ g)

Now let's review the claims

. a) False. Normal force and friction are constants.

. b) False. Both are constant.

. c) False. Both are constant.

d.) False

e) True Yes both are constant