The retractable shelf shown is supported by two identical linkage-andspring systems; only one of the systems is shown. A 20-kg machine is placed on the shelf so that half of its weight is supported by the system shown. If the springs are removed and the system is released from rest, determine 

(a) The acceleration of the machine, 

(b) The tension in link AB. Neglect the weight of the shelf and links.

Transcribed Image Text:

80 mm 80 mm ✓ Fig. P16.13 G A 300 mm 30° 50 mm 100 mm 30⁰ B D 200 mm F 30° E 100 mm