Q7 A child has a marble racetrack toy. The toy has a marble of mass 0.075g that rolls around a circular frictionless track. The marble can complete 3 rotations around the track in a clockwise direction every 2 seconds. The diagram shows the frictionless track with 2 points Y and Z labelled. 6120° How long does it take the marble to move from point Y to Z? (A) 0.11 seconds (B) 0.16 seconds (C) 0.20 seconds (D) 0.22 seconds
Q7 A child has a marble racetrack toy. The toy has a marble of mass 0.075g that rolls around a circular frictionless track. The marble can complete 3 rotations around the track in a clockwise direction every 2 seconds. The diagram shows the frictionless track with 2 points Y and Z labelled. 6120° How long does it take the marble to move from point Y to Z? (A) 0.11 seconds (B) 0.16 seconds (C) 0.20 seconds (D) 0.22 seconds
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Transcribed Image Text:Q7
A child has a marble racetrack toy. The toy has a marble of mass 0.075g
that rolls around a circular frictionless track. The marble can complete 3
rotations around the track in a clockwise direction every 2 seconds. The
diagram shows the frictionless track with 2 points Y and Z labelled.
6120°
How long does it take the marble to move from point Y to Z?
(A) 0.11 seconds
(B) 0.16 seconds
(C) 0.20 seconds
(D) 0.22 seconds
Expert Solution
Step 1
Concept used:
Time depends on amount of rotation of toy.
It is independent of mass being traced.
Step by step
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