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3.2 , motion in plane — Physics STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 SciencePhysics3.2 , motion in plane1 Mark
MCQ
A particle is going with constant speed along a uniform helical and spiral path separately as shown in figure
  • A
    The velocity of the particle is constant in both cases
  • B
    The magnitude of acceleration of the particle is constant in both cases
  • ✓
    The magnitude of accleration is constant in $(a)$ and decreasing in $(b)$
  • D
    The magnitude of accleration is decreasing continuously in both the cases
✓

Answer

Correct option: C.
The magnitude of accleration is constant in $(a)$ and decreasing in $(b)$
c
${a_c}\, = \,\frac{{{v^2}}}{r},$ radius is constant in case $(a)$ and increase in case $(b).$ So that magnitude of acceleration is constant in case $(a)$ and decrease in case $(b).$

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