Analysing Technical Interrelationships - Example 2

Instructions Example 1 Example 2 Example 3 Example 4 Example 5 Example 6

Arrangements I and II each include a beam which is pivot-mounted (like a swing or see-saw). A hook has been mounted on the right end of the beam. The ends of the beam are connected by a rope which is threaded through rolls.

A weight is hung on the hook.

Which of the following statements is/are then correct? (The masses of the beam, rope and hook can be neglected.)

I. In Arrangement I, the right end of the beam moves downward.
II. In Arrangement II, the right end of the beam moves downward.

(A) Only statement I is correct.

(B) Only statement II is correct.

(D) Neither of the two statements is correct.

Degree of difficulty: low to medium

Solution

Instructions Example 2 Example 2 Example 3 Example 4 Example 5 Example 6