3. Mechanical advantage may be calculated by dividing the __ by the __ MA=R/E __ Solve for the unknown variable in the following problems 4. Weight=400pounds Effort=100pounds MA= 5. Effort=500pounds Weight=250pounds MA= 6. Mechanical advantage of 10. Weight=1000pounds Effort = Effort= 7. Mechanical advantage of 2, Effort of 50 pounds Weight= 8 Dotormine the amount of force required at "B" to balance this lever when 'A' is

1. pounds, pounds 2. pounds, pounds 3. Mechanical advantage of 10, pounds pounds4. Mechanical advantage of 2, pounds pounds