Simple vector on a train drawing problem

In summary, the conversation discusses the problem of drawing a free-body diagram for a ball hanging from a string in a train car that is either traveling at a uniform velocity or speeding up uniformly. The first diagram drawn by the individual consisted of two vectors, one pointing up and one pointing down with the same magnitude, but was deemed incorrect by Mastering Physics. The reason for this could be due to the labels used for the two forces.
  • #1
kirby27
32
0
The problem statement, all vaA ball is hanging from a long string that is tied to the ceiling of a train car traveling eastward on horizontal tracks. An observer inside the train car sees the ball hang motionless.

Draw a clearly labeled free-body diagram for the ball if the train has a uniform velocity.

Draw a clearly labeled free-body diagram for the ball if the train is speeding up uniformly.

-for the first one i drew two vectors. one up. one down with the same magnitude and mastering physics said it was wrong. i don't know why?
 
Physics news on Phys.org
  • #2
kirby27 said:
The problem statement, all vaA ball is hanging from a long string that is tied to the ceiling of a train car traveling eastward on horizontal tracks. An observer inside the train car sees the ball hang motionless.

Draw a clearly labeled free-body diagram for the ball if the train has a uniform velocity.

Draw a clearly labeled free-body diagram for the ball if the train is speeding up uniformly.

-for the first one i drew two vectors. one up. one down with the same magnitude and mastering physics said it was wrong. i don't know why?

What labels did you use for those two forces? Perhaps that was the problem.
 

FAQ: Simple vector on a train drawing problem

How do I draw a simple vector on a train?

To draw a simple vector on a train, first determine the direction and magnitude of the vector. Then, using a ruler and a pencil, draw a straight line on the train to represent the direction of the vector. Finally, use an arrowhead to indicate the magnitude of the vector.

What is a vector?

A vector is a mathematical quantity that represents a magnitude (size) and a direction. In drawings, vectors are often represented by arrows.

Why is it important to use vectors in scientific drawings?

Vectors are important in scientific drawings because they allow us to accurately represent the direction and magnitude of physical quantities, such as force or velocity. This helps to communicate information clearly and precisely.

How do I calculate the magnitude of a vector?

The magnitude of a vector can be calculated using the Pythagorean theorem. This involves squaring the x and y components of the vector, adding them together, and then taking the square root of the sum. Alternatively, you can use trigonometric functions to calculate the magnitude.

Can vectors be added or subtracted?

Yes, vectors can be added and subtracted. When adding or subtracting vectors, it is important to consider both the direction and magnitude of the vectors. This can be done geometrically by using the head-to-tail method, or algebraically by breaking the vectors into their x and y components.

Similar threads

Simple vector train problem drawing
Replies
2
Views
8K
What Forces Act on a Train Engine Going Around a Circular Curve?
Replies
10
Views
3K
Solving a Tricky Tension Problem on a Moving Train
Replies
2
Views
2K
How far does the train travel before the engine is ....
Replies
2
Views
1K
Coulomb's force - magnitude of the electric force
Replies
11
Views
3K
Forces and Free-Body Diagrams in Real-World Scenarios
Replies
5
Views
3K
Direction of a rope with a ball inside an accelerating box
Replies
5
Views
1K
Calculating Tension Forces on Charged Balls Suspended by Strings
Replies
10
Views
2K
Box on a conveyor belt (friction)
Replies
6
Views
8K
How Do You Calculate the Minimum Deceleration to Prevent a Train Collision?
Replies
1
Views
4K

Hot Threads

Recent Insights

Back
Top