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Question 18N.1.HL.TZ0.5

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Date November 2018 Marks available [Maximum mark: 1] Reference code 18N.1.HL.TZ0.5
Level HL Paper 1 Time zone TZ0
Command term Question number 5 Adapted from N/A
5.
[Maximum mark: 1]
18N.1.HL.TZ0.5

A mass m attached to a string of length R moves in a vertical circle with a constant speed. The tension in the string at the top of the circle is T. What is the kinetic energy of the mass at the top of the circle?

 

A.    R ( T + m g ) 2

B.    R ( T − m g ) 2

C.    R m g 2

D.    R ( 2 T + m g ) 2

[1]

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A

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