MCQ
The angular speed of seconds needle in a mechanical watch is
- ✓$\frac{\pi }{{30}}\,rad/s$
- B$2\pi \,rad/s$
- C$\pi \,rad/s$
- D$\frac{{60}}{\pi }\,rad/s$
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Statement$-I :$ An elevator can go up or down with uniform speed when its weight is balanced with the tension of its cable.
Statement$-II :$ Force exerted by the floor of an elevator on the foot of a person standing on it is more than his/her weight when the elevator goes down with increasing speed.
In the light of the above statements, choose the correct answer from the options given below :




