You are designing a 2-foot high access ramp for a new library. One group wants a shorter ramp to save space. Another group wants to minimize the uphill force needed to push a wheelchair steadily up the ramp. If you double the ramp's length, the required uphill force will
A. be reduced by half, but the product of that force times the ramp's length will remain unchanged. [76.7% picked]
B. remain the same, but the product of that force times the ramp's travel time will be reduced by half. [3.2% picked]
C. remain the same, but the product of that force times the ramp's length will be reduced by half. [9.0% picked]
D. be reduced by half, but the product of that force times the ramp's travel time will remain unchanged. [11.0% picked]
Answer:A
You are designing a 2-foot high access ramp for a new library. One group wants a shorter ramp to save space. Another group wants to minimize the uphill force needed to push a wheelchair steadily up the ramp. If you double the ramp's length, the required uphill force will
A. be reduced by half, but the product of that force times the ramp's length will remain unchanged. [76.7% picked] B. remain the same, but the product of that force times the ramp's travel time will be reduced by half. [3.2% picked] C. remain the same, but the product of that force times the ramp's length will be reduced by half. [9.0% picked] D. be reduced by half, but the product of that force times the ramp's travel time will remain unchanged. [11.0% picked]