For purposes of Social Security disability benefits, a person with a disability must have a severe disability (or combination of disabilities) that has lasted, or is expected to last, at least 12 months or result in death, and which prevents working at a substantial gainful activity level.
The for loop. 8. A counter variable is used to control or keep track of the number of times a loop. iterates. In a loop, the counter is usually incremented or decremented. If the. counter variable is not properly initialized, it will not hold the correct number. 9. An accumulator is used to keep a running total of numbers. In a loop, a value is. usually added to the current value of the accumulator.
A fixed counterweight is simply a heavy weight on the end of the short arm. Fixed counterweight designs tend to try an pull the treb over. Wheels are often used on trebuchet designs that use fixed counterweights to counter the tipping motion. The counterweight should be 75 to 100 times the weight of the projectile.