Three boxes in contact rest side-by-side on a smooth, horizontal floor. Their masses are 5.0-kg, 3.0-kg, and 2.0-kg, with the 3.0-kg box in the center. A force of 50 N pushes on the 5.0-kg box, which pushes against the other two boxes

(a) Draw the free-body diagrams for each of the boxes.
(b) What magnitude force does the 3.0-kg box exert on the 5.0-kg box?
(c) What magnitude force does the 3.0-kg box exert on the 2.0-kg box?


(a) The following forces act on the 5.0-kg box: the force due to gravity, normal force, contact force between 5.0-kg mass and 3.0-kg mass, the force of 50 N pushing on the box. The following forces act on the 3.0-kg box: the force due to gravity, normal force, contact force between the 5.0-kg box and the 3.0-kg box, the contact force between the 3.0-kg box and the 2.0-kg box. The following forces act on the 2.0-kg box: the force due to gravity, normal force, contact force between the 3.0-kg box and the 2.0-kg box.
(b) 25 N
(c) 10 N

Physics & Space Science

You might also like to view...

Carnot Engine: A heat engine having the maximum possible efficiency has an efficiency of 25% when operating between two heat reservoirs. If the temperature of the cold reservoir is 300 K, what is the temperature of the hot reservoir?

A. 350 K B. 375 K C. 400 K D. 450 K E. 500 K

Physics & Space Science

It is possible using the analogies between linear motion and rotational motion to write an expression for rotational kinetic energy. The formula for rotational kinetic energy (assuming ? is torque, ? is angular acceleration, I is rotational inertia, and ? is angular velocity) is

A. ½ I ?2. B. ½ ? ?2. C. ½ ? ?2. D. ½ I ?2.

Physics & Space Science

What normally occurs in a saucer of water placed on your table is

A) evaporation. B) condensation. C) both of these D) none of the above

Physics & Space Science

If the speed of light through an unknown liquid is measured at 1.67 × 10^8 m/s, what is the index of refraction of this liquid? (c = 3.00 × 10^8 m/s)

a. 1.80 c. 0.600 b. 1.67 d. 1.20

Physics & Space Science