Machines and Mechanical Advantage

A machine requires an effort of 50 N to lift a load of 200 N. What is the mechanical advantage of this machine?

In a particular machine, the effort moves a distance of 2 meters for every 0.4 meters the load moves. What is the velocity ratio of this machine?

A machine has a mechanical advantage of 3 and a velocity ratio of 5. What is the efficiency of the machine?

Which of the following factors influences the mechanical advantage of a real-world machine?

In an ideal machine, what is the relationship between mechanical advantage (MA) and velocity ratio (VR)?

A machine lifts a 50 kg object. What is the equivalent load in Newtons (N) that must be overcome by the machine, assuming the gravitational constant is 10 m/s²?

If a machine has an efficiency of 75% and a velocity ratio of 8, what is its mechanical advantage?

A machine uses 1200 J of work to lift a load, but the work output is only 900 J. How much work is done against friction?

A machine is designed to lift heavy crates in a warehouse. Which of the following modifications would likely increase its velocity ratio?

A simple machine is used to lift a rock. An effort of 100 N is applied, and the rock, which weighs 400 N, is lifted a distance of 0.5 meters. If the effort moved a distance of 2.5 meters, what is the efficiency of the machine?