makmcduffie9194 makmcduffie9194

25-10-2019
Physics

contestada

A rock of mass m is twirled on a string in a horizontal plane. The work done by the tension in the string on the rock is:
a. + (positive)
b. - (negative)
c. 0

Respuesta :

umohduke14 umohduke14

27-10-2019

Answer: c) 0

Explanation:

Work tension is zero because in any infinitesimal time interval, the tension force is directly perpendicular to the displacement.

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