A wheel barrow is used to lift a 150 lb load. The length from the wheel axle to the center of the load is 2 ft. The length from the wheel and axle to the effort is 6 ft. a. What is the ideal mechanical advantage of the system? b. Using static equilibrium calculations, calculate the effort force needed to overcome the resistance force in the system.

Explanation:

Mechanical advantage is will be the ratio of the distances from the wheel axle of the forces.

The ideal mechanical advantage of the system is .

The moment in the system is conserved so moment about the wheel axle is

The required effort force is .

the correct answer is c.stops after infancy and childhood.

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answer:

the answer is d

explanation: