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ICSE Class 10 Answered

WHEN CAN A FORCE EXERTED ON A BODY PIVOTED AT A POINT PRODUCE NO TURNING EFFECT? EXPLAIN.
Asked by cbiswajit | 17 Sep, 2019, 09:05: PM
answered-by-expert Expert Answer
Turning effect is produced by torque applied to the object.
 
Torque = ( force ) × ( perpendicular distance form the pivot point to the direction of force )
 
If Torque is zero, then no turning effect
 
Torque will be zero, if  perpendicular distance from pivot point to the direction of force is zero.
 
In fig.1 and fig. 2, perpendicular distance d from pivot point to the direction of force is greater than zero.
Hence torque is greater than zero and produces turning effect
 
In fig.3, perpendicular distance d from pivot point to the direction of force is zero.
Hence torque is zero and no turning effect
Answered by Thiyagarajan K | 18 Sep, 2019, 08:15: AM

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