SHM workout problems

If a force of 20 N stretches a spring 0.5 m, what is the spring constant?

• 10 N/m
• 20 N/m
• 40 N/cm
• 40 N/m

How much displacement will a coil spring with a spring constant of 110 N/m achieve if it is stretched by a 70 N force?

• 0.636 m
• 63.6 m
• 1.57 m
• 157 m

An amusement park ride has a frequency of 0.064 Hz. What is the ride’s period?

• 0.064 sec
• 6.4 sec
• 2pi / 0.064
• 15.625 sec

An amusement park ride swings back and forth (like a pendulum) once every 17.4 s. What is the ride’s frequency?

• 0.0575 sec
• 0.0575 hz
• 17.4 sec
• 17.4 hz

A truck with bad shock absorbers bounces up and down after hitting a bump. The truck has a mass of 1700 kg and is supported by four springs, each having a spring constant of 6200 N/m. What is the period for each spring?

• 0.26 sec
• 1.645 sec
• 0.26 hz
• 1.645 hz

What is the period of a 693 cm long pendulum with a bob of mass 68.0 kg? Assume the acceleration due to gravity is 9.8 m/s^2.

• 5.28 hz
• 5.28 sec
• 7.47 hz
• 7.47 sec

What is the length of a pendulum that has a bob with a mass of 20 kg and a period of 3.1 seconds?

• 20 m
• 2.39 m
• 2.42 m
• 0.77 m

A 30 N weight stretches a certain spring a length of 8 cm.  Find the period of oscillation if a mass of 4 kg is made to vibrate on the same spring.

• 0.067 s
• 375 s
• 0.649 s
• 6.49 s

A mass- spring system oscillates with a period of 2.2 seconds.  If the mass of the system is 3 kg, what is the spring constant of the spring? 

• 53.83 N/m
• 24.47 N/m
• 8.57 N/m
• 1.36 N/m

A spring with a force constant of 50 N/m has a 5 gram mass attached to it. The spring is stretched a distance of 8 cm from equilibrium. What is the elastic potential energy of the spring?

• 2 J

• 0.16 J

• 3.2 J

• 0.32 J