Part 2: Forces and the Laws of Motion. Chapter 4. Part 2. Newton’s Laws Balanced vs. Unbalanced Forces Drawing Free-Body Diagrams Static Problems Finding Net Forces on Inclined Planes Two Body Problems. Objects in Equilibrium. Objects are at rest or have a constant velocity
Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.
Net force: vector sum of all forces (resultant)
Fparallel=Weight * sin
Fperpendicular=Weight * cos
A child holds a sled at rest on a frictionless, snow-covered hill (30.0° incline) . If the sled weighs 77.0 N, find the force exerted by the rope on the sled and the magnitude of the normal force exerted by the hill on the sled.
Without friction and a mass of 25 kg and an angle of 30.0°
Suppose a block with a mass of 2.50 kg is resting on a ramp. If the coefficient of static friction between the block and ramp is 0.350, what maximum angle can the ramp make with the horizontal before the block starts to slip down?
Pull at an angle of 45 degrees (use protractor) block with an added 1kg mass on top. a. Find coefficient of kinetic friction. Draw a free body diagram as above. Did the value for coefficient change?
Find the coefficient of kinetic friction between the block (no added mass) and a large inclined plane at zero angle. Draw free body diagram all forces, all equations, and work.
Draw a free body diagram for an incline of 20 degrees with your block. Find the following:
Calculate the minimum force required to pull this block up an incline of 20 degree at a constant velocity. Show work below.
Repeat these steps but now at an angle of 40 degrees. Show all forces on a free body diagram, all work. Test on the ramp and then find % error.
A block of mass 5.00 kg rides on top of a second block of mass 10.0 kg. A person attaches a string to the bottom block and pulls the system horizontally across a frictionless surface. Friction between the two blocks keeps the 5.00 kg block from slipping off. If the coefficient of static friction is 0.350, what maximum force can be exerted by the string on the 10.0 kg block without causing the 5.00 kg block to slip?
A block with mass m1=4.00 kg and a ball with mass m2=7.00 kg are connected by a light string that passes over a frictionless pulley. The coefficient of kinetic friction between the block and the surface is 0.300. Find the acceleration of the two objects and the tension of the string.