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A 1450-kg submarine rises straight up toward the surface. Seawater exerts both an upward buoyant force of 16 140 N on the submarine and a downward resistive force of 1030 N. What is the submarine’s acceleration?

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0.621 $\mathrm{m} / \mathrm{s}^{2}$

Physics 101 Mechanics

Chapter 4

Forces and Newton’s Laws of Motion

Newton's Laws of Motion

Applying Newton's Laws

Cornell University

Rutgers, The State University of New Jersey

Simon Fraser University

Lectures

03:28

Newton's Laws of Motion are three physical laws that, laid the foundation for classical mechanics. They describe the relationship between a body and the forces acting upon it, and its motion in response to those forces. These three laws have been expressed in several ways, over nearly three centuries, and can be summarised as follows: In his 1687 "Philosophiæ Naturalis Principia Mathematica" ("Mathematical Principles of Natural Philosophy"), Isaac Newton set out three laws of motion. The first law defines the force F, the second law defines the mass m, and the third law defines the acceleration a. The first law states that if the net force acting upon a body is zero, its velocity will not change; the second law states that the acceleration of a body is proportional to the net force acting upon it, and the third law states that for every action there is an equal and opposite reaction.

03:43

In physics, dynamics is the branch of physics concerned with the study of forces and their effect on matter, commonly in the context of motion. In everyday usage, "dynamics" usually refers to a set of laws that describe the motion of bodies under the action of a system of forces. The motion of a body is described by its position and its velocity as the time value varies. The science of dynamics can be subdivided into, Dynamics of a rigid body, which deals with the motion of a rigid body in the frame of reference where it is considered to be a rigid body. Dynamics of a continuum, which deals with the motion of a continuous system, in the frame of reference where the system is considered to be a continuum.

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A 1450-kg submarine rises …

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1450-kg submarine rises st…

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A 1430-kg submarine rises …

A submarine remains submer…

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A bathysphere used for dec…

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An exploration submarine s…

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Find the buoyant force on …

02:50

(a) Calculate the absolute…

to serve this question. All we have to do is apply Newton's second law. There are only forces acting on the vertical axis, So let me choose these to be the positive direction off that access. Then the net force on that access. Is it close to the mass of the simmering times, its acceleration. So that celebration of this premiering is it close to the net force divided by the mess. But the net force is composed by three forces. The bullet wound up force which points the positive direction miners the Yuyuan Down Force, which points the negative direction. My news. The weight force which outside points to the negative direction and these always divided by the mass off the simmering. Now remember that the weight force is given by the mass times acceleration of gravity, which is approximately 9.8 meters per second squared. Then the acceleration off that submarine is given by 16140 miners 10 30 minus 14 15 times 9.8 divided by 14 15 Then the acceleration is approximately 0.6 to 2 meters per second squared

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