Question

1.A mass-spring system oscillates with an amplitude of 5.1 cm. If the force constant of the spring of 426 N/m and the mass is 0.26 kg, what is the magnitude of the maximum acceleration of the mass in m/s²?

Enter a number with one digit behind the decimal point.

2. What is the period (in s) of a simple pendulum of length 0.12 m and mass 0.31 kg near the surface of a planet where the gravitational acceleration is 11 m/s²?

Enter a number with 2 digits behind the decimal point.

3. A traveling wave is described by the equation y(x,t) =( 0.17 m) cos(17.9 x + 166 t ), where x is measured in meter and t in seconds. What is the velocity of this wave in units of m/s?

Enter a number with one digit behind the decimal point.

Remember that in one dimension the sign of the velocity functions as the direction indicator.

4. What is the period (in s) of a simple pendulum of length 0.61 m and mass 0.19 kg near the surface of a planet where the gravitational acceleration is 13.7 m/s²?

Enter a number with 2 digits behind the decimal point.

5. Let the speed of sound be 340 m/s.

A source emits a sound of 450 Hz. It is moving towards the right with a speed of 37 m/s and approaching an observer who is moving towards the left with a speed of 51 m/s. what is the frequency heard by the observer?

Enter an integer.

The decibel level of a sound is 37.4 dB. What is the intensity of the sound in nW/m²?
1 nW = 10^-9 W

Enter a number with 1 digit behind the decimal point.

Answer 1