Basic Physics Problem: Acceleration and Tension of Connected Blocks"

AI Thread Summary
The discussion revolves around a physics homework problem involving two connected blocks, where one block is 0.8 kg and the other is 2.0 kg, linked by a massless string over a frictionless pulley. The problem requires calculating the acceleration of the blocks and the tension in the string, considering a coefficient of kinetic friction of 0.14 and a ramp angle of 60 degrees. Participants emphasize the importance of applying Newton's second law to each block separately, noting that the tension remains constant due to the frictionless pulley. Additionally, they clarify that the friction force is determined by the coefficient of friction multiplied by the normal force. The discussion encourages the student to work through the problem step-by-step for better understanding.
kikisf20c
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Hi guys,i'm happy to join you.
I have the problem shown below for homework and i don't know how to solve it. This is becouse i have missed a lot of lessons during this month becouse of an illness.
I will apreciate it if anyone can help me with the problem. Thanks.

Problem:
Two blocks, one 0.8 kg and the other 2.0 kg are connected by a massless string over a frictionless pulley. The coefficient of kinetic friction is 0.14, and the downward ramp angle is 60 degrees.

a) Determine the acceleration of the blocks.

b) Calculate the tension of the string.
 
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Welcome to PF!

Hi kikisf20c! Welcome to PF! :smile:

(which mass is hanging vertically? and is that 60º from the horizontal?)

The tension in the string will be the same at both ends (because the pulley is frictionless).

And the acceleration of both blocks will be the same (beacuse the length of the string is constant).

And the friction force is µ times the normal force.

So apply good ol' Newton's second law to each block (separately) …

what do you get? :smile:
 

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