Answer to Question #104118 in Physics for Lara

Question

A particle slides , without friction, from a height h=1m along a path AB and enters a vertical smooth circle BCD of radius r=5cm 1)find the velocity of the particle as it reaches points B,C and D 2) if the parachutist opens his parachute after 10m of fall , he finds that he achieves a velocity of 15m/s at the end of the first 20m . Does conflict with the result of part 1)? Is the mechanical energy conserved? If not, what is the loss(or gain) in the mechanical energy during the first 20m of fall?

Answer 1

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