Mathematical and Physical Journal
for High Schools
Issued by the MATFUND Foundation

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Problem P. 3974. (April 2007)

P. 3974. A body of mass m₁=2 kg slides down from the top of an inclined plane (the angle of inclination is $\alpha$ =20^o.) A cart of mass m₂=1 kg is attached to this body with a thread of length $\ell$ =1.6 m as shown in the figure. The thread initially is straight. Along the first part of the slope, the length of which is $\ell$ /2, friction is negligible, along the second part, the length of which is $\ell$ /2, the coefficient of friction is $\mu$ =0.6. How far will the two objects be when the cart reaches the pulley?

(4 pont)

Deadline expired on May 11, 2007.

Statistics:

116 students sent a solution.

4 points: 67 students.

3 points: 28 students.

2 points: 6 students.

1 point: 3 students.

0 point: 2 students.

Unfair, not evaluated: 10 solutionss.

Problems in Physics of KöMaL, April 2007

116 students sent a solution.
4 points:	67 students.
3 points:	28 students.
2 points:	6 students.
1 point:	3 students.
0 point:	2 students.
Unfair, not evaluated:	10 solutionss.