-- A man lifts various loads with the same lever. The distance of the applied force from the fulcrum is 1.00 m, and the distance from the fulcrum to the load is 0.250 m. A graph of resistive force vs. effort force is shown.
What is the mechanical advantage of the lever? What is the ideal mechanical advantage of the lever? What is
the efficiency of the lever? Show your work.

Very large accelerations can injure the body, especially if they last for a considerable length of time. one model used to gauge the likelihood of injury is the severity index ( ), defined as =/ . in the expression, is the duration of the accleration, but is not equal to the acceleration. rather, is a dimensionless constant that = the number of multiples of that the acceleration is equal to.in one set of studies of rear-end collisions, a person's velocity increases by 13.7 km/h with an acceleration of 36.0 m/s2 . let the + direction point in the direction the car is traveling. what is the severity index for the collision?

Ihave a density of 1.61g/cm^3 and a mass of 28g. find the missing value

An ideal otto cycle has a compression ratio of 10.5, takes in air at 90 kpa and 40°c, and is repeated 2500 times per minute. using constant specific heats at room temperature, determine the thermal efficiency of this cycle and the rate of heat input if the cycle is to produce 90 kw of power.