23. A spring has a natural length of 20cm. The upper end of the spring is hooked on a-nail. 1 hespring hangs vertically below the nail. When the other end of the spring is attached to a 2.0kgmass, the spring has a length of 25cm. What is the spring constant of this spring (to 2 sig.figs)?1/21622=mghA) 40 N/mB) 390 N/mK =(2(Z19.8)hC) 78 N/mD) 98 N/mE) 5.0 N/m4.9.816.2)

Elongation, x = 25 cm - 20 cm = 5 cm = 0.05 m Mass, m = 2 kg Acceleration due to gravity, g = 9.8…

Answered: 23. A spring has a natural length of…

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter16: Oscillatory Motion And Waves

Section: Chapter Questions

Problem 6PE: A spring has a length of 0.200 m when a 0.300kg mass hangs from it, and a length of 0.750 m when a...

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A spring has a length of 0.200 m when a 0.300kg mass hangs from it, and a length of 0.750 m when a 1.95-kg mass hangs from it. (a) What is the force constant of the spring? (b) What is The unloaded length of the spring?
One type of toy car contains a spring that is compressed as the wheels are rolled backward along a surface. The spring remains compressed until the wheels are freed and the car is allowed to roll forward. Jose learns that if he rolls the car backward for a greater distance (up to a certain point), the car will go faster when he releases it. The spring compresses 1.00 cm for every 10.0 cm the car is rolled backward. a. Assuming the spring constant is 150.0 N/m, what is the elastic potential energy stored in the spring when Jose rolls the car backward 20.0 cm? b. What is the elastic potential energy stored in the spring when he rolls the car backward 30.0 cm? c. Explain the correlation between the results for parts (a) and (b) and Joses observations of different speeds.
A spring 1.50 m long with force constant 475 N/m is hung from the ceiling of an elevator, and a block of mass 10.0 kg is attached to the bottom of the spring. (a) By how much is the spring stretched when the block is slowly lowered to its equilibrium point? (b) If the elevator subsequently accelerates upward at 2.00 m/s2, what is the position of the block, taking the equilibrium position found in part (a) as y = 0 and upwards as the positive y-direction. (c) If the elevator cable snaps during the acceleration, describe the subsequent motion of the block relative to the freely falling elevator. What is the amplitude of its motion?
An archer pulls her bowstring back 0.400 m by exerting a force that increases uniformly from zero to 230 N. (a) What is the equivalent spring constant of the bow? (b) How much work is done in pulling the bow?
1. A 67.7g mass is suspended on the end of a 9.45cm long spring, stretching it to 12.35cm. What is the spring constant of this spring?
10. A pendulum has a bob with a mass of 0.077 kg. The bob reaches a maximum speed of 0.60 m/s. Calculate the maximum height that it will rise to.
The shock absorbers in a car act as a big spring. When a 92.5 kg person gets in, the car sinks 0.0131 m. What is the spring constant of the shocks? (Unit = N/m) Enter
3. A mass weighing 50 lb stretches a spring ft. This mass is removed and replaced with a mass of 2 slugs, which is released 4 ft. below the equilibrium position with a downward velocity of 25 ft./s. Express the solution in the form Asin(wt + o). What is the maximum displacement from the equilibrium position?
1. A spring is compressed 0.48m and exerts a force of 32N, what is the spring constant?
6. A 2kg body suspended from a spring of negligence mass is found to stretch the spring by 10cm.If the body is pulled down and the released. what is the frequency of oscillation?
A spring has a length of 0.738 meters. One end of the spring is held fixed while a force of 16.4 newtons is applied to the other end. This causes the length of the spring to change to 0.572 meters. Calculate the spring constant.
3. A spring is stretched to a length of 0.35m using a force of 4.5N. If the spring constant of 30N/m. How long was the spring originally?

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