1. A 700g ball rotates around a vertical shaft supported by two strings, as shown in Figure A2.01. If the tension in the upper string is 20.0N, determine

• the tension in the lower string.
• the rotation rate (in rpm) of the system.

\f- - - --: - - - - - - 45 cm 10 kg Figure A2.03\f7 cm F 15 cm h Figure A2.13\f2.0 m 24 cm Figure A2.15O M m Figure A2.17