Physics

posted by .

5. The ball launcher in a pinball machine has a spring that has a force constant of 1.20 N/cm . The surface on which the ball moves is inclined 10.0° with respect to the horizontal. The spring is initially compressed 5.00 cm. Find (a) the launching speed of a 100-g ball when the plunger is released; (b) How far does the ball move along the incline? Friction and the mass of the plunger are negligible.

  • Physics -

    a. Wb = m*g = 0.1kg * 9.8N/kg = 0.98 N. = Wt of the ball.

    Fb = 0.98N @ 10o = Force of ball.
    Fp = 0.98*sin10o = 0.170 N. = Force parallel to incline.
    Fv = 0.98*cos10 = 0.965 N. = Force perpendicular to incline.

    Fap = 1.2N/cm * (-5cm) = -6 N, = Force applied.

    a=Fn/m=(Fap-Fp)/m
    a=(-6+0.17)/0.1=-58.3m/s^2

    Ekmax = Epmax.
    0.5m*V^2 = mg*d.
    0.5*0.1*V^2 = 0.98*5.
    05*V^2 = = 4.9
    V^2 = 98
    V = 9.9 m/s.

    b. V^2 = Vo^2 + 2a*d.
    d = (V^2-Vo^2)/2a=(0-98)/-116.6=0.84 m.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Physics

    A pinball machine uses a spring that is compressed 4.0 cm to launch a ball. If the spring constant is 13 N/m, what is the force on the ball at the moment the spring is released?
  2. physics

    The spring in the muzzle of a child's spring gun has a spring constant of 780 N/m. To shoot a ball from the gun, first the spring is compressed and then the ball is placed on it. The gun's trigger then releases the spring, which pushes …
  3. College Physics

    The ball launcher in a pinball machine has a spring that has a force constant of 1.50 N/cm. The surface on which the ball moves is inclined a = 14.5o with respect to the horizontal. If the spring is initially compressed 4.70 cm, find …
  4. Phy

    A 2.0 kg ball is placed against a spring of force constant 750N/m, which has been compressed 0.28m. The spring is released and the ball moves along a horizontal frictionless surface and up a ramp. Calculate the... a) maximum elastic …
  5. Physics

    A pinball machine has a spring with spring constant of 125N/m. A 65g ball is placed on the spring and the spring is compressed 5cm. How far along the playing surface makes a 15 degrees angle with the horizontal?
  6. physics

    in preparation in shooting a pinball machine, a spring(k = 675N/m) is compressed by 0.0650m relative to its unstrained lenght.the ball(m = 0.0585kg) is at rest against the spring at point A. when the spring is released ,the ball
  7. Dynamics

    A ball is launched up an inclined wall by a spring. The spring has a spring constant of 12.2 kN/m and is initially compressed 0.3m. The ball has a mass of 1.7 kg, a radius of 0.045m, and a moment of inertia of 0.0014kg*m^2. You can …
  8. Physics

    A ball is launched up an inclined wall by a spring. The spring has a spring constant of 12.2 kN/m and is initially compressed 0.3m. The ball has a mass of 1.7 kg, a radius of 0.045m, and a moment of inertia of 0.0014kg*m^2. You can …
  9. physics

    A pinball machine launches a 139 g ball with a spring-driven plunger. The game board is inclined at 8 ◦ above the horizontal. Assume: The plunger’s mass and frictional effects are negligible. The acceleration of gravity is …
  10. Physics

    A 35.1 g pinball starts at the top of a frictionless pinball table inclined at 46.0°. If the ball is released and the spring at the bottom is compressed 0.0600 m and has a spring constant of k = 27.7 N/m, how far back up the pinball …

More Similar Questions