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| 1. |
A spherical ball of mass `M` moving with initial velocity `V` collides elastically with another ball of mass `M`, which is fixed at one end of `L` shaped rigid massless frame as shown in Fig. (a). The `L` shaped frame contains another mass `M` connected at the other end. How soon will the frame come to the orientation shown in Fig. (b) after collision?A. `(7piL)/(4v)`B. `(piL)/(2v)`C. `(7piL)/(8v)`D. `(piL)/(v)` |
| Answer» Use conservation of linear and angular momemtum along with conservation of kinetic energy. (elastic collision) | |