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Two masses m 1 and m 2 are connected by a massless string which runs over a mass

ID: 1367067 • Letter: T

Question

Two masses m1 and m2 are connected by a massless string which runs over a massless frictionless pulley. The table is FRICTIONLESS, and you may assume that the string is always tight (there is never any slack). The masses are free to move if they should. how does the tension acting on m1 compare with the weight of m2?

Are the masses accelerating? HINT: Think about the forces acting on m1.
A. Yes, m2 accelerates downward and m1 accelerates to the right.
B. No, they stay still so they do not accelerate.
C. Cannot determine unless we know if m1 is greater than, less than, or equal to m2.
D. No, they move with a constant velocity so they do not accelerate.

How does the tension acting on m2 compare with the weight of m2? HINT: Newton's 2nd Law!
Cannot determine unless we know if m1 is greater than, less than, or equal to m2.
A. |[(F) ec]T| = m2g
B. |[(F) ec]T| < m2g
C. |[(F) ec]T| > m2g

How does the magnitude of the tension acting on m1 compare with the magnitude of the tension acting on m2?
Impossible to tell unless we know if m1 is greater than, less than, or equal to m2.
A. The tension acting on m2 is larger than the tension acting on m1.
B. The tensions acting on the masses are equal in magnitude.
C. The tension acting on m1 is larger than the tension acting on m2.

How does the magnitude of the tension acting on m1 compare with the weight of m2?
|[(F) ec]T| > m2g
Cannot determine unless we know if m1 is greater than, less than, or equal to m2.
A. |[(F) ec]T| = m2g
B. |[(F) ec]T| < m2g

C. |[(F) ec]T| > m2g

Explanation / Answer

1 )

A. Yes, m2 accelerates downward and m1 accelerates to the right.

2 )

A. |[(F) ec]T| = m2g

3 )

B. The tensions acting on the masses are equal in magnitude.

4 )

A. |[(F) ec]T| = m2g

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