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Engineering101

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You are given a pendulum composed of a 0.030 kg mass on the end of a 0.42 m long massless string. The pendulum is moved 25° from the vertical and released. Find the tension in the string when the mass is at the release point,

θ = 25°.

Tsin(65)-mg=0

Tsin(65)=mg

T=.32 N

This is one solution I came up with.

The other option I am unsure of is if the T force would be 0 because "there is no net force directed along the axis that is perpendicular to the motion. Since the motion of the object is momentarily paused, there is no need for a centripetal force." -http://www.physicsclassroom.com/class/waves/u10l0c.cfm

Thanks for the guidance.