The radius of arc is measured by allowing a 20 mm diameter roller to o – McqOptions

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1.	The radius of arc is measured by allowing a 20 mm diameter roller to oscillate to and fro on it and the time for 25 oscillations is noted at 56.25 s. The radius of arc will be
A.	865 mm
B.	850 mm
C.	835 mm
D.	820 mm
Answer» C. 835 mm

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