Question 1

Question

A) How can you calculate the mechanical advantage a simple machine provides? (1 point)
• Simple machines do not provide a mechanical advantage.
• divide the output force by the output displacement
• divide the output displacement by the input displacement
• divide the output force by the input force
Question 2
A) How can a simple fixed pulley make a job easier? (1 point)
•by decreasing the force required to lift the object
• by decreasing the distance that the force needs to be applied
• by decreasing the work done
• by changing the direction at which the force needs to be applied

Answer 1

Question 1
To calculate the mechanical advantage a simple machine provides, you divide the output force by the input force.
Answer: divide the output force by the input force

Question 2
A simple fixed pulley makes a job easier primarily by changing the direction at which the force needs to be applied, allowing you to pull down instead of lifting up.
Answer: by changing the direction at which the force needs to be applied