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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

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

A mass is whirled in a circle and let go, describe path when mass released

A parabola in the vertical plane