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3 Cards in this Set
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- Back
A particle moves in constant speed in circular motion but accelerates. Explain this. |
Speed is scalar quantity, velocity is vector. Direction changes continuously, velocity changing, acceleration rate of change of velocity |
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0.1kg mass, 78 revolutions per minute, distance r from centre, if max frictional force is 0.5N, calculate max. R for mass to stay on circle |
W=2 (pi)f=2pi×78/60=8.17 R=f/mw^2 =0.5/0.1×8.17^2 = 7.5×10^-2m |
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A mass is whirled in a circle and let go, describe path when mass released |
A parabola in the vertical plane |