If the mechanical advantage is greater than 1.0, the lever produces more force, but less speed or distance, than the force exerted on it. if the mechanical advantage is less than 1.0, the lever produces more speed or distance, but less force, than the input.
a) true
b) false

True.

Explanation: Mechanical advantage is defined as defined as the force amplification done by a mechanical device, where in order to amplificate the force, the device must "trade" movement and velocity (because you can not just amplify the force without lossing anithing)

The definition of mechanical advantaje is:

A = F1/F2 where F2 is the input force and F2 is the output force.

Si if A > 1, then F1 > F2, so the statement would be true.

12000j is work done