Question

Physical Science Help Please???
12. Which of the following pieces of information are needed to calculate the mechanical advantage of an inclined plane?

the effort distance and the resistance force
the resistance force and height
the amount of effort needed to perform the work
the effort distance and the resistance distance

15. When less force is used but the amount of work done remains the same, how does distance change?

Distance stays the same.
Distance is increased.
Distance is decreased.
Distance is dependent on the mass of the object.

16. How does distance change when the amount of effort force is increased while the amount of work done remains the same?

Distance will be increased.
Distance will be unchanged.
Distance will be dependent on the mass of the object.
Distance will decrease.

19. Which of the following is contained in a pull start lawnmower?

a pulley and a wheel and axle
a wheel and axle and an inclined plane
a pulley and a wedge
a wheel and axle and a block and tackle

@ganeshie8