How to find tangential velocity of a mass?

In summary, the conversation discusses finding angular velocity in a problem involving masses and time. Guidance is given to analyze forces and apply Newton's 2nd law, specifically considering the type of acceleration and force diagram. The conclusion is that there is no vertical motion and the forces in the y-direction are zero, while acceleration occurs along the x-axis.
  • #1
coldjeanz
22
0

Homework Statement


WlCZ6.png



Homework Equations



Vτ = r(ω)

ω=dθ/dt


The Attempt at a Solution



I have gone through this section in my book and see nothing about doing this with masses involved. There's no time involved in this question so how do you get ω? I'm really lost here, any initial guidance would be appreciated.
 
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  • #2
Analyze forces on the mass and apply Newton's 2nd law. Hint: What kind of acceleration does the mass experience?
 
  • #3
Draw your force diagram and ask yourself, in which direction do the forces add to zero and in which direction do they not. And in the direction where there is acceleration, what kind of acceleration do you have and what equations are associated with that type of acceleration. Be careful on that diagram. You might want to post it first before going any further.
 
  • #4
Acceleration is in the x-direction and forces add to 0 in y?
 
  • #5
True - There is no vertical motion so the forces in the y direction are indeed zero
And there is acceleration along the x-axis but look at the path the object makes. The x-axis is what part of that geometric shape?
 

FAQ: How to find tangential velocity of a mass?

What is tangential velocity?

Tangential velocity is the linear velocity of an object moving in a circular path at a specific point on the circle. It is a measure of the speed and direction of the object's motion along the tangent to the circle at that point.

How do you calculate tangential velocity?

Tangential velocity can be calculated by multiplying the angular velocity (ω) of the object by the radius (r) of the circular path. The formula is v = ωr, where v is tangential velocity, ω is angular velocity in radians per second, and r is the radius in meters.

What is the unit of tangential velocity?

The unit of tangential velocity depends on the units used for angular velocity and radius. If angular velocity is given in radians per second and radius is given in meters, then the unit of tangential velocity is meters per second (m/s).

Can tangential velocity be negative?

Yes, tangential velocity can be negative. This indicates that the object is moving in the opposite direction of the tangent to the circle at that point. Positive tangential velocity indicates a counterclockwise motion, while negative tangential velocity indicates a clockwise motion.

How is tangential velocity related to centripetal acceleration?

Tangential velocity and centripetal acceleration are related through the formula a = v²/r, where a is centripetal acceleration, v is tangential velocity, and r is the radius of the circular path. This means that as tangential velocity increases, centripetal acceleration also increases, and vice versa.

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