Q#3 A 45 N force is applied to a wrench 0.50 m from the axisof rotation of a nut

Question

Q#3 A 45 N force is applied to a wrench 0.50 m from the axisof rotation of a nut( pointing downword) (a) what is the torque?(b) If the force were applied instead at an angle of 30.0 degreeswith respect to the horizontal. what would the resulting torque be?(still 45N force pointing downword) (c) If a constant torque of 7.0NM is applied to a bolt as it goes 1.0 revolution counterclockwise, what is the amount of rotational work which isdone? Q#3 A 45 N force is applied to a wrench 0.50 m from the axisof rotation of a nut( pointing downword) (a) what is the torque?(b) If the force were applied instead at an angle of 30.0 degreeswith respect to the horizontal. what would the resulting torque be?(still 45N force pointing downword) (c) If a constant torque of 7.0NM is applied to a bolt as it goes 1.0 revolution counterclockwise, what is the amount of rotational work which isdone?

Explanation / Answer

(a) Torque = r*F = (45)(0.5) = 22.5N.m (b) Torque = rFsin30 = 45* 0.5 *0.5 =11.25 m.N (c) work W = = (7.0) (1.0 rev*2 rad/rev) = 43.96 J

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