Mathematical and Physical Journal
for High Schools
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Problem P. 4034. (January 2008)

P. 4034. A body of mass m=1.8 kg is placed to an inclined plane, the angle of inclination is \alpha=30o, and is attached to the top end of the slope wit a thread which is parallel to the slop. Then the slope is moved with a horizontal acceleration of a. Friction is negligible.

a) Find the acceleration if the body pushes the slope with a force of \frac{3}{4}mg.

b) Find the tension.

(4 pont)

Deadline expired on February 11, 2008.


205 students sent a solution.
4 points:150 students.
3 points:20 students.
2 points:8 students.
1 point:8 students.
0 point:15 students.
Unfair, not evaluated:4 solutions.

Problems in Physics of KöMaL, January 2008