Finding the Minimum Angle for Motion on an Inclined Plane

In summary, a 45 kg box placed on a flat board starts moving at an angle of 27 degrees. If the mass is doubled, the minimum angle needed for it to start moving is 14.5 degrees.
  • #1
physics_freak
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Homework Statement



A box with mass of 45 kg is placed on a flat board. It starts moving when the board is inclined at 27 degrees. If the mass is doubled, what is the minimum angle needed so that it starts moving?

Homework Equations



Frictional force = mgsin[tex]\theta[/tex]

The Attempt at a Solution

 

Attachments

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  • #2
physics_freak said:

Homework Statement



A box with mass of 45 kg is placed on a flat board. It starts moving when the board is inclined at 27 degrees. If the mass is doubled, what is the minimum angle needed so that it starts moving?

Homework Equations



Frictional force = mgsin[tex]\theta[/tex]

The Attempt at a Solution

Your (or is it the book's?) solution is correct.
 

Related to Finding the Minimum Angle for Motion on an Inclined Plane

What is the minimum angle?

The minimum angle refers to the smallest angle that can be formed between two lines or objects.

How is the minimum angle measured?

The minimum angle is measured in degrees, with a protractor or other measuring tool.

What is the significance of the minimum angle in geometry?

In geometry, the minimum angle is important because it helps determine the size and shape of objects and their relationships to one another.

Can the minimum angle be negative?

No, the minimum angle cannot be negative as it is always measured as a positive value between 0 and 360 degrees.

What is the difference between minimum angle and maximum angle?

The minimum angle is the smallest angle that can be formed, while the maximum angle is the largest angle. They are opposite ends of the spectrum and together determine the range of possible angles within a given space.

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