A 25.0-g metal washer is tied to a 70.0-cm-long string and whirled around in a vertical...

Question

Question

science physics

Answer 1

Answer #1

a) Tension in the string when washer is at bottom

T = mg + m v² / R

= [25 * 10^-3 * 9.8] + [25*10^-3 * 6² / 0.70]

T = 1.53 N

b) Tension in the string when washer is at top of the path

T = mg - m v² / R

= [25 * 10^-3 * 9.8] - [25*10^-3 * 6² / 0.70]

T = 1.04 N

[tension in downward direction]

Answer 2

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