Question

. Solve the following numerical problems.
1. A lever used to lift a heavy box has an
effort arm of 4 m and a load arm of 0.8 m.
What is the mechanical advantage of the
lever?
2. A worker uses a crowbar to lift a manhole
cover weighing 65 N. The effort arm of
the lever is 60 cm long and the load arm
is 10 cm long. What is the mechanical
advantage of the bar?
3. What is the mechanical advantage of a
lever that has an effort arm of 3 m and a
load arm of 2 m?
4. If an output force is five times larger than
the input force, what is the mechanical
advantage?
5. The MA of a lever is 0.5. If the load is 1 N,
calculate the effort needed.​

Answer 1

Answer:

dont know man im just here to get points

Explanation: