In building a house, carpenters use nails from a large box. The box is suspended from a spring twice during the day to measure the usage of nails. At the beginning of the day, the spring stretches 50 cm. At the end of the day, the spring stretches 30 cm. What percentage of the nails have been used?
A man with a mass of 80.0 kg stands on a pogo stick, compressing the spring in the stick by 0.120 cm. What is the spring’s force constant?
A set of scales obeys Hooke’s law. The scales are depressed 0.75 cm by a load of 120 kg.
What is the force constant of the scales?
When someone stands on the scales a depression of 0.48 cm is measured. What is the person’s mass?