A 28.0 kg block is connected to an empty 2.10 kg bucket by a cord running over a frictionless pulley. The coefficient of static friction between the table and the block is 0.50 and the coefficient of kinetic friction between the table and the block is 0.29. Sand is gradually added to the bucket until the system just begins to move (Figure 1).

The object shown below (length = 6 m) remains completely stationary, despite the fact that three forces act on it. Forces 1 and 3 act at either end, while force 2 acts 1/4 of the way from the left end. new-torque-prob If the size of force 3 is 4 N, then how large must the other two forces be? F1 F2 =

Create a simple balance using a ruler as the balance beam and a pencil as the fulcrum. - Using a nickel as your standard, what are the ratios of the weights of a penny, dime, and quarter to that of a nickel? Explain how you determined these values.

Load (L) = 5 kgs My: E - Elort E- Fulcrum Weight of forearm = 1.8 kgs L- Load Biceps brach musclo Distance of load from elbow joint = 35 cm Effort ) contraction of biceps brachi Distance of center of mass of forearm from elbow = 17 cm Distance of tendon from elbow = 4 cm A) Draw the free-body diagram to represent the forces and moments Load (Umeigtt of ond plus fosarm B) Write the torque equation for static equilibrium Fulcrum ( bon pint

Question 5

9) Consider the system below. In which direction will the heavier box slide? Which mass must increase, and by how much, to maintain the system in equilibrium? The angle at left is 28.1 degrees and the angle at right is 47.5 degrees. For the left, u = 0.405 and on the right 0.222. 4.65 kg 9.15 kg

2. Take the example in class for when a fan attached to the sailboat fails to move the boat forward. The sail is removed but the fan keeps running. Will the boat move then? Why or why not? If so, which way will the boat move?

5.) Please help with equation, gravity is g=32.2 ft/sec^2 or g=9.81 m/sec^2