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What is a force? A force is simply a push or a pull. A force is a vector, so it has a direction. The SI unit of force is the newton (N). 1 N = 1 kg m/s2. In addition, a force represents an interaction between objects. For instance, the Earth exerts a force on the pen and the pen exerts a force on the Earth.
The work done by a force is defined as the product of the displacement and the component of the force acting in the direction of the displacement, measured in Joules. (W = F.s) OR the amount of energy transferred by the force. Kinetic energy (Ek) is the energy possessed by a body due to its motion. (Ek = 1⁄2 mv2)
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1) Draw only the forces acting on the object (not the forces which the object exerts on others). 2) Indicate strength and direction of forces on the object by drawing arrows coming out of the object.
• Define normal and tension forces. • Apply Newton's laws of motion to solve problems involving a variety of forces. • Use trigonometric identities to resolve weight into components.
review the different types of forces encountered in Newtonian (or classical) mechanics before we introduce Newton’s Laws. A force is an interaction between two bodies or between a body and its environment. One intuitive type of force is a contact force, which often clearly involves a direct interaction
Pressure (p) is defined as the force perpendicular to a surface per unit area , and can be calculated using the following equation: p = A F Where F is the force acting perpendicular to the surface and A is its area. Using the defining equations of pressure and density, you can derive the formula p g Δh Δ =ρ used in section 5.1:
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Mar 30, 2022 · In physics and other sciences, a force is a push or pull on a mass that can change the object’s motion. Force is a vector quantity, meaning it has both magnitude and direction. The symbol for force is the capitol letter F.
