physics

The three blocks shown are released from rest and are observed to move with accelerations that have a magnitude of 1.5 m/s^2. Disregard any pulley mass or friction in the pulley and let M = 2 kg.
a) What is the magnitude of the friction force on the block that slides horizontally?
b) What is the tension force between M and 2M?

pulley-----block2M-----pulley
l l
l l
blockM block2M

  1. 👍
  2. 👎
  3. 👁
  1. ok, forces, to the right is +
    starting on the left side...
    -mg -frictionon2M + 2mg=total mass*acceleration
    mg-frictionon2M=(5m)*1.5
    frictionon2m=2*9.8-7.5=12.1 N

    1. 👍
    2. 👎
    👤
    bobpursley

Respond to this Question

First Name

Your Response

Similar Questions

  1. Physics

    Two blocks of masses m1 = 2.00 kg and m2 = 3.70 kg are each released from rest at a height of h = 5.60 m on a frictionless track, as shown in the figure below, and undergo an elastic head-on collision. (Let the positive direction

  2. physics

    Two blocks are connected by a string over a frictionless, massless pulley such that one is resting on an inclined plane and the other is hanging over the top edge of the plane. the hanging block has a mass of 16 kg and the one on

  3. phy

    A 3.50 kg block on a smooth tabletop is attached by a string to a hanging block of mass 2.80 kg. The blocks are released from rest and allowed to move freely. 1-Is the tension in the string greater than, less than, or equal to the

  4. physics

    Two boxes are connected by a weightless cord running over a very light frictionless pulley as shown in the figure. Box A, of mass 8.0 kg, is initially at rest on the top of the table. The coefficient of kinetic friction between

  1. 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

  2. Physics

    Two blocks are arranged as shown. The pulley can be considered to be massless, and friction is negligible. M1 is four times more massive than M2. M1--->0(Pulley) V V (down direction) V M2 If the system is released from rest, how

  3. 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

  4. physics

    As shown in the figure, blocks of masses m1 = 292.5 g and m2 = 536.7 g are attached by a massless string over a frictionless and massless pulley. The coefficients of static and kinetic friction between the block and inclined plane

  1. 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

  2. Physics

    Two masses m are attached to two vertices of an equilateral triangle made of three massless rods of length l. A pivot is located at the third vertex, and the triangle is free to swing back and forth in a vertical plane. If it is

  3. physics

    Did I do a) and b) right? The three blocks shown are released from rest and are observed to move with accelerations that have a magnitude of 1.5 m/s2. Disregard any pulley mass or friction in the pulley and let M = 2 kg. a) What

  4. physics

    Two blocks with masses m1 = 1.4 kg and m2 = 3.6 kg are at rest on a frictionless surface with a compressed spring between them. The spring is initially compressed by 60.0 cm and has negligible mass. When both blocks are released

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