The two blocks (m 16 kg and M 88 kg) in Fig. 6-40 are not...

Name: Problem 35, Chapter 6: Principles of Physics
Uploaded: 2019-12-11T21:11:44-08:00
Duration: 2 min 44 s
Channel: Averell Hause
Description: The two blocks (m 16 kg and M 88 kg) in Fig. 6-40 are not attached to each other. The coefficient of static friction between the blocks is ms 0.33, but the surface beneath the larger block is frictionless. What is the minimum magnitude of the horizontal force required to keep the smaller block from slipping down the larger block?

The two blocks (m 16 kg and M 88 kg) in Fig. 6-40 are not attached to each other. The coefficient of static friction between the blocks is ms 0.33, but the surface beneath the larger block is frictionless. What is the minimum magnitude of the horizontal force required to keep the smaller block from slipping down the larger block?

The two blocks (m 16 kg and
M 88 kg) in Fig. 6-40 are not attached to each other. The coefficient
of static friction between the blocks
is ms 0.33, but the surface beneath
the larger block is frictionless. What
is the minimum magnitude of the
horizontal force required to keep
the smaller block from slipping down the larger block?

Key Concepts

Non-Inertial Reference Frames

When analyzing motion from the perspective of an accelerating system, the reference frame is non-inertial. In such frames, apparent forces, known as pseudo forces, must be introduced to correctly apply Newton's Second Law. This approach is particularly useful when considering the relative motion between objects in an accelerating setup.

Pseudo Force

A pseudo force is an apparent force that arises when observing dynamics from a non-inertial (accelerating) frame of reference. It acts in the direction opposite to the acceleration and helps account for the effects of the acceleration on objects within the frame, thereby allowing for an analysis of equilibrium or relative motion conditions.

Newton's Second Law

This law states that the net force acting on an object is equal to the mass of the object multiplied by its acceleration. In problems involving connected or interacting bodies, like blocks in contact, Newton's Second Law is used to relate the applied force to the resulting acceleration of the objects.

Static Friction

Static friction is the force that resists the initiation of sliding motion between two surfaces in contact. It has an upper limit characterized by the product of the coefficient of static friction and the normal force. In dynamics problems, this concept is crucial to determine whether one object will slip relative to another.

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