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

1. Considering the schematic below depicting procedure 3, which of the following correctly draws the free-body diagram for the car and cart? (If image with possible figure choices does not load, refer to http://prntscr.com/fyzm8j )

a. Figure 3

b. Figure 1

c. Figure 2

d. Figure 4

Direction of Motion PASCar Felt-Bottomed Cart Fear-cart Fcar-cart PASCar PASCar Felt-Bottomed Cart Felt-Bottomed Cart cart-car Figure 1 Figure 2 Fcart-car cart-car PASCar Felt-Bottomed Cart PASCar Felt-Bottomed Cart Fcar-cart car-cart Figure 3 Figure 4

Explanation / Answer

as the felt bottomerd car has to move in the right, it faces friction to the left
and the car pushing from left applies F-car-cart on the right
Fn and W are the two other forces ( action reaction pair that will always be there)

nd the car, is applying the Fcar-cart, so its applied on the car in the left direction

hecne, option B is the right answer ( figure 2_)

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