Question

A toy gun shoots spherical plastic projectiles by means of a spring. A typical projectile has a mass of m = 25 g. The spring used has a spring constant of k = 18.6 N/m, and when put under load, it is displaced 10 cm, as shown in Figure P6.92. The barrel of the gun exerts a slight frictional force, F_friction= -0.1512 N, on the pellet as it moves down the barrel from its starting point over a total length of L = 38 cm. If the toy gun is fired in a horizontal position,

(a) at what position measured from the starting point does the pellet reach maximum velocity? (Hint: Consider an equilibrium condition between the spring force and the friction force on the pellet before it leaves the spring.)

=0.0919 m

(b) What is the maximum speed achieved by the pellet as it is fired from the gun?

=2.5059 m/s

(c) At what speed does the pellet leave the barrel?

????? WHAT IS ANSWER C ?????

Answer 1

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