Big AirA new generation of pogo sticks lets a
Chapter , Problem 9P(choose chapter or problem)
Problem 9P
Big Air
A new generation of pogo sticks lets a rider bounce more than 2 meters off the ground by using elastic bands to store energy. When the pogo’s plunger hits the ground, the elastic bands stretch as the pogo and rider come to rest. At the low point of the bounce, the stretched bands start to contract, pushing out the plunger and launching the rider into the air. For a total mass of 80kg (rider plus pogo), a stretch of 0.40 m launches a rider 2.0 m above the starting point.
Riders can use fewer elastic bands, reducing the effective spring constant of the pogo. The maximum stretch of the bands is still 0.40 m. Reducing the number of bands will
A. Reduce the force on the rider and give a lower jump height.
B. Not change the force on the rider but give a lower jump height.
C. Reduce the force on the rider but give the same jump height.
D. Make no difference to the force on the rider or the jump height.
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