Refer to bit.ly/2th7p1u or www.physics.qc.edu/files/512 Lab handout to reference

Question

Refer to bit.ly/2th7p1u

or www.physics.qc.edu/files/512 Lab handout to reference questions/ answers.

Friction Force Prelab Quiz

Question 1

In procedure 1, as the mass of the cart increases, theta max (angle) should

a. increase

b. decrease

c. remain the same

d. increase for the felt-bottom cart, but decrease for the acrylic

e. increase for the acrylic-bottom cart, but decrease for the felt

Question 2

If (s) in procedure 1 is measured to be 6.5º for the felt-bottomed cart of total mass 58g, (s) is calculated to be? Enter your response to three significant figures.

______.

Question 3

In procedure 2, the maximum frictional force for the loaded cart compared to the unloaded cart is expected to be

a. smaller

b. larger

c. the same

d. larger for the felt-bottom cart, but smaller for the acrylic

e. increase for the acrylic-bottom cart, but decrease for the felt

Explanation / Answer

1. C) remains tha same because Q does not depend on the mass.

2. us = tan6.5 = 0.114

3. B) Larger for loaded compared to the unloaded cart

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