- Rank the structures below in order of increasing support base width.
- Rank the structures below in order of increasing height. All four structures are solid and are made of the same material.
- Rank the structures below in order of increasing from the ground. All four structures have the same and are at rest.
- A child at a playground pushes on a large disk that rotates on an axle trough its center. The child tries pushing on the edge of the disk in several different directions, as indicated by the top-down diagrams below. Rank the child’s attempts by the amount of applied to the disk, from least to greatest.
- If the child in the previous problem was able to apply a 12 N force and the disk had a 0.5 m radius, what would be the value of the torque applied in trial 3?
- Each structure in the following image is . What do you know about the on each block?
- Structure #1 weighs 5000 N. What is the normal force on the structure?
- Structure # 2 weighs 5000 N. Each rocket is capable of pushing with 1000 N of force. What is the normal force on the structure from the ground?
- Structure # 4 weighs 5000 N. Each rocket is capable of pushing with 1000 N of force. What is the force provided by the rope?
- The structure in the following image is at rest. What do you know about the net torque on the structure?
- An engineer performing an inspection on the previous structure measures 45 m from beneath the center of gravity of the block to the point where the structure contacts the ground. The block weighs 1200 N. She then measures the distance to the beneath the center of gravity of the arm to be 95 m. The arm weighs 1200 N as well. Finally she measures the distance to beneath the rocket to be 150 m from the contact point. She then calculates the force being provided by the rocket, what value does she get?
- State which type of equilibrium is exhibited by each structure below: stable, unstable, or metastable.
- Rank the structures below in order of increasing stability. All structures are solid and made of a single material type.
a point at which the force of gravity on body or system (weight) may be considered to act. In uniform gravity it is the same as the center of mass.
the outward force supplied by an object in response to being compressed from opposite directions, typically in reference to solid objects.
the force of gravity on on object, typically in reference to the force of gravity caused by Earth or another celestial body
the result of a force applied to an object in such a way that the object would change its rotational speed, except when the torque is balanced by other torques
the total amount of remaining unbalanced force on an object
the force that is provided by an object in response to being pulled tight by forces acting from opposite ends, typically in reference to a rope, cable or wire