Question

A toy car is tied to a string and pulled across a table horizontally. Which is the

correct free-body diagram for this situation?

Answer 1

Correct answer is option D

Step-by-step explanation:

In this question we have given that toy car is tied to a string and pulled across the table

Therefore there must be three forces which will act on toy car, these are as follows

1. Force due to gravity

2. Normal reaction force

3. Tension in string

Force due to gravity
`F_(g)` will act in downward direction therefore to balance it there must be a normal force which will act in upward direction
`F_(norm)` since the toy car is not accelerating in the y direction.

Since the car is accelerating in horizontal direction therefore tension force will act in the horizontal direction therefore,
`F_(t)` will act to the right.

Answer 2

D

Step-by-step explanation:

With
`F_(g)` acting as a downward force, there must be a normal force counteracting it, because the toy car is not accelerating in the y direction. This force is the Normal Force or
`F_(norm)`.

The Tension force must be going in the horizontal direction because the toy car is being pulled horizontally, so
`F_(t)` mist be going to the right.