Physics

Three blocks rest on a frictionless, horizontal table (see figure below), with m1 = 8 kg and m3 = 20 kg. A horizontal force F = 101 N is applied to block 1, and the acceleration of all three blocks is found to be 3.5 m/s2.

Find m2.
What is the normal force between blocks 2 and 3?

  1. 👍 0
  2. 👎 0
  3. 👁 652
  1. F = (m1 + m2 + m3) a
    You already know m1 and m3, a and F.

    Solve for m2.

    The force between blocks 2 and 3 is what acclerates m3. That force is m3*a

    1. 👍 1
    2. 👎 0

Respond to this Question

First Name

Your Response

Similar Questions

  1. physics

    In Figure (a), a block of mass m lies on a horizontal frictionless surface and is attached to one end of a horizontal spring (spring constant k) whose other end is fixed. The block is initially at rest at the position where the

  2. Physics

    Two blocks are arranged at the ends of a massless string as shown in the figure. The system starts from rest. When the 3.21 kg mass has fallen through 0.4 m, its downward speed is 1.27 m/s. The acceleration of gravity is 9.8 m/s2

  3. physics

    In the figure, a 2.4 kg box of running shoes slides on a horizontal frictionless table and collides with a 1.4 kg box of ballet slippers initially at rest on the edge of the table, at height h = 0.75 m. The speed of the 2.4 kg box

  4. Physics

    1. The figure shows a 100-kg block being released from rest from a height of 1.0 m. It then takes 0.53 s for it to reach the floor. What is the mass m of the block on the left? There is no friction or mass in the pulley, and the

  1. physics

    The masses of blocks A and B are 4.5 kg and 3.7 kg respectively. The blocks are initially at rest and are connected by a massless string passing over a massless, frictionless pulley. The system is released from rest. a. What is

  2. Physics. PLEASE HELP!

    two blocks of masses m1 and m2 (m1>m2) are placed on a frictionless table in contact with each other. A horizontal force of magnitude F is applied to the block of mass m1. if P is the magnitude of the contact force between the

  3. physics

    A 150 N block is at rest on a table, a cable is connected from this block to another hanging off of the table. This block is 75 N. What is the magnitude of the minimum force of static friction on the 150 N block required to hold

  4. Physics

    Two blocks are arranged at the ends of a massless cord over a frictionless massless pulley as shown in the figure. Assume the system starts from rest. When the masses have moved a distance of 0.317 m, their speed is 1.33 m/s. The

  1. college physics

    Two blocks with masses m and M are pushed along a horizontal frictionless furface by a horizontal applied force. The magnitude of the force either of these blocks has on the other is: M being a bigger mass than m of course. I

  2. physics

    Two blocks connected by a cord passing over a small, frictionless pulley rest on frictionless planes: a) What is the acceleration of the blocks? b) What is the tension in the cord? c) Which way will the system move when the blocks

  3. Physics-Mechaincs

    A force of 23.52 N pushes and pulls to blocks as shown in the figure below. The vertical contact surfaces between the two blocks are frictionless. The contact between the blocks and the horizontal surface has a coefficient of

  4. Physics

    Two blocks, with masses M1 = 1.4 kg and M2 = 9.9 kg, and a spring with spring constant k = 228 N/m are arranged on a horizontal, frictionless surface. The coefficient of static friction between the two blocks is 0.59. What is the

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