Magnitude and Direction of Puck on Ice

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Homework Help Overview

The problem involves a 0.170 kg puck on frictionless ice being struck by two forces at specific angles. The objective is to determine the magnitude and direction of the puck's acceleration after being struck.

Discussion Character

  • Exploratory, Mathematical reasoning, Assumption checking

Approaches and Questions Raised

  • Participants have resolved the x and y components of the forces using trigonometry and are discussing how to combine these components to find the resultant force. Questions arise about the next steps after calculating the components, including how to determine the direction of the acceleration.

Discussion Status

Some participants have provided guidance on summing the components and calculating the resultant force. There is ongoing exploration of how to find the direction of the acceleration, with participants questioning their understanding of the relationship between the components and the angle.

Contextual Notes

There is an assumption that the angles provided are in degrees relative to the x-axis. Participants are also grappling with the implications of the calculated acceleration value, which seems unexpectedly large.

cupra
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Homework Statement


A 0.170 kg puck rests on frictionless ice. Two hockey players strike the puck simultaneously. #1 force is 350. N exerted at 020.0T, and the other #2 force is 600. N exerted at 065.0T. What is the magnitude and direction of the puck's acceleration at the instant that it is struck.


Homework Equations





The Attempt at a Solution

I have resolved the x and y components of the #1 force using trigonometry (x=119.7N and y=328.9N). I also resolved the x and y components of the #2 force using trigonometry (x=543.8N and y=253.6N). What do I do next?
 
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Please look at this I think I'm Close
 
cupra said:

Homework Statement


A 0.170 kg puck rests on frictionless ice. Two hockey players strike the puck simultaneously. #1 force is 350. N exerted at 020.0T, and the other #2 force is 600. N exerted at 065.0T. What is the magnitude and direction of the puck's acceleration at the instant that it is struck.

The Attempt at a Solution

I have resolved the x and y components of the #1 force using trigonometry (x=119.7N and y=328.9N). I also resolved the x and y components of the #2 force using trigonometry (x=543.8N and y=253.6N). What do I do next?

I am going to assume that 20.0T here means the angle in degrees to the X-axis which looks like the way you calculated it anyway.

As you have figured out the forces are vectors. What you are trying to figure is the resulting vector. Hence you have separated them into their components ... so just add them together. X's to x's and y's to y's. Then figure the magnitude of the force from the Root of the sum of the squares. Divide by mass to get a.

Your angle will be given by the ratio of the sides.
 
So, Sum of x1 and x2 = 663.5 and Sum of y1 and y2 = 582.5 therefore the hyp. is 882.9
F=ma, a= 5,193.5 m/s2 for my acceleration. This seems bigger than I thought it would be.
How do I figure the direction? I just don't see it in my mind... And THANKS SO MUCH
 
cupra said:
So, Sum of x1 and x2 = 663.5 and Sum of y1 and y2 = 582.5 therefore the hyp. is 882.9
F=ma, a= 5,193.5 m/s2 for my acceleration. This seems bigger than I thought it would be.
How do I figure the direction? I just don't see it in my mind... And THANKS SO MUCH

What is the ratio of y divided by x? Isn't that Tanθ so if you have the value of Tanθ then to find θ just take the ArcTan in degrees of Y/X . That yields θ doesn't it?
 

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