Q:

If the friction of the pin on which the pinion rotates is neglected, which of the following force is equal to the tangential effort exerted by the spur gear on the pinion

A) Radial effort exerted by the spur gear on the pinion B) Tangential reaction of the annular gear on the pinion
C) Radial reaction of the annular gear on the pinion D) Piston effort
 

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