The drawing at right is supposed to be a free-body diagram of a box that sits without slipping on a ramp. Is the diagram correct?

Can you please solve this question.

The figure below shows 2 blocks.  The upper block has a mass of 4.0 kg and the lower block has a mass of 3.0 kg.  The friction coefficient between the lower block and the ground is 0.60.  The friction coefficient (static and kinetic) between the 2 blocks is 0.71.  Determine the force necessary to cause the maximum acceleration possible without the upper block slipping.

You are camping in bear country and you are setting up your camp for the night. You string up your food, as shown in the picture below, so that the bears in the area do not steal it. The breaking tension of the type of string you are using is 800 Newtons. Any tension greater than that will cause the string to snap. The mass of your food pack is 10 kg. If a bear comes along in the night and pulls straight down on the food pack, with what maximum force can it pull before the strings snap?

Hi, I really appreciate you taking the time to help me out! John places a coin on a horizontal turntable with a rubber surface. The coin is 28 cm from the center of the circular table. He notices that the coin just begins to slip when the table rotates at 45 rpm (revolutions per minute). What is the coefficient of static friction between the coin and turntable?

A crate hangs from a rope that is attached to a metal ring. The metal ring is suspended by a second rope that is attached overhead at two points, as shown. What is the angle 0 if the tension in rope 1 is 1.63 times the tension in rope 2? Rope 2 = Rope 1

A sled weighing 53.5 N is pulled horizontally across snow so that the coefficient of kinetic friction between sled and snow is 0.100. A penguin weighing 70.5 N rides on the sled, as in the figure below. If the coefficient of static friction between penguin and sled is 0.700, find the maximum horizontal force that can be exerted on the sled before the penguin begins to slide off.

A weight hangs from a ring at the middle of a rope, as the drawing illustrates. Can the person who is pulling on the right end of the rope ever make the rope perfectly horizontal? Explain your answer in terms of the forces that act on the ring.

The Colussus is a ferris wheel at 6 Flags amusement park with a 50.4 m diameter. It rotates at 1.5 rpm. For the following, assume the rider has a mass m = 65 kg, and that the rider sits forward with feet up so the only part of the seat that exerts a force on the rider is the horizontal seat bottom. As usual, a free body diagram is a great place to start. Find the normal force exerted by a seat on a person riding the Colossus at the highest point in the ride. Hint: the speed of the rider can be computed from the circumference of their circular path and the time it takes to make one full revolution. Find the normal force exerted by a seat on a person riding the Colossus at the lowest point in the ride.

a 12.0 kg box is sitting motionless on a plane, which is tilted to an angle of 30 degrees. what must the minimum value of the coefficient of static friction between the box and the surface of the plane be, so that the box does not move? include a system diagram and a FBD in your solution,