Physics

A child's toy consists of a block that attaches to a table with a suction cup, a spring connected to that block, a ball, and a launching ramp. (Intro 1 figure) The spring has a spring constant k, the ball has a mass m, and the ramp rises a height y above the table, the surface of which is a height H above the floor.

Initially, the spring rests at its equilibrium length. The spring then is compressed a distance s, where the ball is held at rest. The ball is then released, launching it up the ramp. When the ball leaves the launching ramp its velocity vector makes an angle theta with respect to the horizontal.

Throughout this problem, ignore friction and air resistance.

Calculate v_r, the speed of the ball when it leaves the launching ramp.
Express the speed of the ball in terms of k, s, m, g, y, and/or H.

I thought it's supposed to be
sq(2mgyH)/m

wouldn't it just have potential and kinetic energy? apparently that's incorrect.

  1. 👍 1
  2. 👎 0
  3. 👁 6,398
  1. You seem to be neglecting the stored energy in the compressed spring, which is very important

    1. 👍 0
    2. 👎 1
  2. Would it be sq(2ks^2/m)?

    1. 👍 1
    2. 👎 0
  3. sq((ks^2-mgy)/m)

    1. 👍 0
    2. 👎 1
  4. sq((ks^2/m)-2gy)

    1. 👍 2
    2. 👎 0
  5. answer does not include h or y.

    1. 👍 0
    2. 👎 0
  6. sqrt(ks^2-2mgy/m)

    1. 👍 3
    2. 👎 0
  7. sqrt(ks^2-2mgy)/m

    1. 👍 0
    2. 👎 0
  8. ITS DEFF
    sqrt(ks^2-2mgy/m)
    Paul ALL DAY

    1. 👍 0
    2. 👎 0
  9. /sqrt((ks^2 -mgy)/m)

    1. 👍 0
    2. 👎 0
  10. E1=E2
    E1=(ks^2)/2
    E2=mgh+(mv^2)/2
    (ks^2)/2=mgh+(mv^2)/2
    2*[(ks^2)/2-mgh]/m=v^2
    sq[(ks^2-2mgh)/m]=v

    1. 👍 0
    2. 👎 0
  11. wq[(ks^2-2mgy)/m]=v
    its y not h

    1. 👍 0
    2. 👎 0
  12. REAL FINAL ANSWER: SQUARE ROOT OF (ks^2/m+2gH)

    1. 👍 0
    2. 👎 0
  13. -.-

    1. 👍 0
    2. 👎 1

Respond to this Question

First Name

Your Response

Similar Questions

  1. physics

    a 10-kg block on a perfectly smooth horizontal table is connected by a horizontal string to a 63-kg block that is hanging over the edge of the table. What is the magnitude of the acceleration of the 10-kg block when the other

  2. Science

    A 20 kg block rests on a rough horizontal table. A rope is attached to the block and is pulled with a force of 80 N to the left. As a result, the block accelerates at 2.5 m/s2. The coefficient of kinetic friction μk between the

  3. Physics

    A child's game consists of a block that attaches to a table with a suction cup, a spring connected to that block, a ball, and a launching ramp. By compressing the spring, the child can launch the ball up the ramp. The spring has a

  4. Physics

    A block of mass m = 2.00 kg is released from rest h = 0.500 m from the surface of a table, at the top of a theta = 30.0° incline. The frictionless incline is fixed on a table of height H = 2.00 m. (a) Determine the acceleration

  1. Physics Dynamics

    A 4-kg block is connected by means of a massless rope to a 2-kg block. What is the magnitude of the acceleration if the coefficient of kinetic friction between the 4-kg block and the surface is 0.20? Note : The 4kg block is on the

  2. physics

    A heavy wooden block rests on a flat table and a high-speed bullet is fired horizontally into the block, the bullet stopping in it. How far will the block slide before coming to a stop? The mass of the bullet is 10.5 g, the mass

  3. physics

    A child's toy consists of a piece of plastic attached to a spring, as shown below. The spring is compressed against the floor a distance 1.8 cm and released. If the spring constant is 107 N/m, what is the magnitude of the spring

  4. Physics

    A child’s toy consists of plastic attached to a spring. The spring is compressed against the floor a distance of 2.46 cm, and the toy is released. The acceleration of gravity is 9.8 m/s2 . If the toy has a mass of 102 g and

  1. Chemistry

    The following questions concern the iconic Nestle Toll House Chocolate Chip Cookie recipe, shown below: 2 1/4 cups all-purpose flour 1 teaspoon baking soda 1 teaspoon salt 1 cup butter or margarine, softened 3/4 cup granulated

  2. physics

    A 4.0-kg block is stacked on top of a 12.0-kg block, which is accelerating along a horizontal table at a = 5.2m/s2 . Let u=uk=us. (a) What minimum coefficient of friction u between the two blocks will prevent the 4.0-kg block from

  3. PHYSICS

    Calculate the force required to remove a suction cup of area 2.60 cm2 from the surface to which it is stuck.

  4. Grade 12 physics

    At the beach, 3 children pull on a floating toy. Child 1 plus with a force of 15N [N 24°E], child 2 pulls south and child 3 pulls west. The net force of the toy is zero. Assume that there are no other significant forces acting on

You can view more similar questions or ask a new question.