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March 29, 2017

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A pendulum consists of an object of mass 1.07 kg that hangs at the end of a massless bar, a distance 1.14 m from the pivot point. Calculate the magnitude of the torque due to gravity about the pivot point if the bar makes an angle of 22° with the vertical.

  • physics - ,

    the weight will be mgCos22 in the direction perpendicular to the bar.

    So torque will be weightpendulum*cos22*1.14

  • physics - ,

    will the weight be in kg or grams?

  • physics - ,

    It does not matter IF you put your units on the problem. However, if your weight is in Newtons, you better use kg as masses.

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