Gr 11 Physical Sciences: Ch 2.1 Force

<p>The vector sum of all the forces acting on an object.</p> Signup and view all the answers

<p>Perpendicular force.</p> Signup and view all the answers

<p>Perpendicular to the surface.</p> Signup and view all the answers

<p>A force that opposes the motion of an object in contact with a surface.</p> Signup and view all the answers

<p>Parallel to the surface.</p> Signup and view all the answers

<p>Both the nature of the surfaces in contact and the magnitude of the normal force</p> Signup and view all the answers

<p>Static friction is present when an object is not moving, while kinetic friction is present when an object is moving</p> Signup and view all the answers

<p>A constant that depends on the nature of the surfaces in contact</p> Signup and view all the answers

<p>$f_{max,s} = \mu_s N$</p> Signup and view all the answers

<p>To sketch all the forces acting on a system</p> Signup and view all the answers

<p>$F_{gx} = F_g \sin(\theta)$</p> Signup and view all the answers

<p>By drawing a free body diagram and using vector addition</p> Signup and view all the answers

<p>To simplify the calculation of the resultant force</p> Signup and view all the answers

<p>It can cause a change to an object without physical contact</p> Signup and view all the answers

<p>It has the same effect as all the individual forces acting together</p> Signup and view all the answers

<p>A force that balances the gravitational force pulling the object down</p> Signup and view all the answers

<p>Parallel to the surface</p> Signup and view all the answers

<p>A contact force requires physical contact, while a non-contact force does not</p> Signup and view all the answers

<p>The force used to push or pull objects</p> Signup and view all the answers

<p>Equal to the gravitational force pulling the object down</p> Signup and view all the answers

<p>It has both magnitude and direction</p> Signup and view all the answers

<p>The surfaces in contact are deformed differently for static and kinetic friction</p> Signup and view all the answers

<p>43.3 N</p> Signup and view all the answers

<p>Tension</p> Signup and view all the answers

<p>To visualize and analyze the forces acting on an object</p> Signup and view all the answers

<p>Upwards and perpendicular to the surface</p> Signup and view all the answers

<p>The normal force is not acting perpendicular to the inclined plane</p> Signup and view all the answers

<p>17.3 N</p> Signup and view all the answers

<p>It helps to visualize and analyze the forces acting on an object</p> Signup and view all the answers

<p>To simplify calculations involving inclined planes</p> Signup and view all the answers

<p>The static frictional force can vary up to a maximum value dependent on the normal force</p> Signup and view all the answers

<p>It provides a clear visual representation of all the forces acting on an object</p> Signup and view all the answers

<p>f_k = μ_k N</p> Signup and view all the answers

<p>The direction of the force is parallel to the object's surface</p> Signup and view all the answers

<p>To provide a visual representation of all the forces acting on an object</p> Signup and view all the answers

<p>The normal force decreases as the angle of inclination increases</p> Signup and view all the answers

<p>F_gy = F_g cos(θ)</p> Signup and view all the answers

<p>To understand the nature of the force and its interaction with objects</p> Signup and view all the answers

<p>Gravity, such as the Earth's pull on the Moon</p> Signup and view all the answers

<p>The normal force balances the gravitational force</p> Signup and view all the answers

<p>It opposes the motion of an object in contact with a surface</p> Signup and view all the answers

<p>It enables us to determine the direction of the force</p> Signup and view all the answers

<p>Having the same effect as all the individual forces acting together</p> Signup and view all the answers

<p>Because forces have the same underlying principles</p> Signup and view all the answers

<p>Parallel to the horizontal</p> Signup and view all the answers

<p>It decreases to a value less than the maximum static frictional force</p> Signup and view all the answers

<p>It provides a clear representation of all forces acting on an object</p> Signup and view all the answers

<p>Tension force</p> Signup and view all the answers

<p>The coefficient of friction is directly proportional to the normal force</p> Signup and view all the answers

<p>It decreases and becomes less than the weight of the car</p> Signup and view all the answers

<p>To analyze the forces acting on an object in a particular direction</p> Signup and view all the answers

<p>The difference in the adhesive properties of the surfaces</p> Signup and view all the answers

<p>10√2 N</p> Signup and view all the answers

<p>The resultant force is always greater than the individual forces.</p> Signup and view all the answers

<p>10 N</p> Signup and view all the answers

<p>Frictional force</p> Signup and view all the answers

<p>20√3 N</p> Signup and view all the answers

<p>They can change the shape of an object.</p> Signup and view all the answers

<p>15/√3 N</p> Signup and view all the answers

<p>It does not have to touch an object to cause a change.</p> Signup and view all the answers