Torsional springs provide a simple propulsion mechanism for toy cars. When the rear wheels are rotated as if the car were moving
Torsional springs provide a simple propulsion
Let the weight of the car (body and wheels) be W = 5 oz, the weight of each of the wheels be Ww= 0.15 oz, and theradius of the wheels be r = 0.25 in., where the wheels roll without slip and can be treated as uniform disks. Neglecting friction internal to the car and letting the car’s torsional spring be linear with constant kt= 0.0002 ft-lb/rad, determinethe maximum speed achieved by the car if it is released from rest after pulling it back a distance L = 0.75 ft from a position in which the spring is unwound. Use conservation law methods to solve the problem
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