A cable lifting a 4.00-lb bowling ball stretches by 3.00 mm. The same cable lifting a 5.00-lb bowling ball stretches by

Question

Quizplus · Accepted Answer

The stretch in the cable is directly proportional to the weight of the bowling ball. Therefore, we can use the formula: 
stretch = constant x weight

To find the constant, we can use the information given: 
stretch = 3.00 mm when weight = 4.00 lbs

So the constant is: 
constant = stretch/weight = 3.00 mm/4.00 lbs = 0.75 mm/lb

Now we can use this constant to find the stretch when the weight is 5.00 lbs: 
stretch = constant x weight = 0.75 mm/lb x 5.00 lbs = 3.75 mm

Therefore, the answer is choice C, 3.75 mm.

A Cable Lifting a 4