College Physics

a (4.35) ∥ = 3.39 m/s 2 , which is the acceleration parallel to the incline when there is 45.0 N of opposing friction. Discussio ...

Figure 4.15When a perfectly flexible connector (one requiring no force to bend it) such as this rope transmits a forceT, that fo ...

Figure 4.16(a) Tendons in the finger carry forceTfrom the muscles to other parts of the finger, usually changing the force’s dir ...

Figure 4.18When the vectors are projected onto vertical and horizontal axes, their components along those axes must add to zero, ...

T= w (4.51) 2 sin (5.0º) = mg 2 sin (5.0º) , so that (4.52) T= (70.0 kg)(9.80 m/s^2 ) 2(0.0872) , and the tension is T= 3900 N. ...

Extended Topic: Real Forces and Inertial Frames There is another distinction among forces in addition to the types already menti ...

Figure 4.22(a) A sketch of Tarzan hanging from a vine. (b) Arrows are used to represent all forces.Tis the tension in the vine a ...

and with experience it becomes progressively easier to judge whether an answer is reasonable. Another way to check your solution ...

which we know, because of Newton’s first law, is the same direction as the acceleration.FDis in the opposite direction ofFapp, s ...

Figure 4.24A traffic light is suspended from two wires. (b) Some of the forces involved. (c) Only forces acting on the system ar ...

Thus, T 2 = (1.225)T 1. (4.69) Note thatT 1 andT 2 are not equal in this case, because the angles on either side are not equal. ...

Figure 4.25(a) The various forces acting when a person stands on a bathroom scale in an elevator. The arrows are approximately c ...

Fs= 825 N. (4.82) Discussion for (a) This is about 185 lb. What would the scale have read if he were stationary? Since his accel ...

We are given the initial and final velocities (zero and 8.00 m/s forward); thus, the change in velocity isΔv= 8.00 m/s. We are g ...

The gravitational force is surprisingly weak—it is only because gravity is always attractive that we notice it at all. Our weigh ...

with Hideki Yukawa’s (1907–1981) work on the strong nuclear force, that all forces are transmitted by the exchange of elementary ...

acceleration: carrier particle: dynamics: external force: force field: force: free-body diagram: free-fall: friction: inertia: i ...

Newton’s first law of motion: Newton’s second law of motion: Newton’s third law of motion: net external force: normal force: sys ...

w∥=wsin (θ) =mgsin (θ) w⊥ =wcos (θ) =mgcos (θ). • The pulling force that acts along a stretched flexible connector, such as a ro ...

14.The gravitational force on the basketball inFigure 4.6is ignored. When gravityistaken into account, what is the direction of ...