Question

is the first one right? please help with 13

A simple pendulum (mass on a string) oscillates with a period T. The mass is then doubled. The period is now: T/4 O 2T OT O 4T T/2 Question 13 8 pts An object completely submerged in an incompressible fluid is at rest. Which of the following are true? (Select all that apply.) If the object is pushed slightly downwards it will keep moving downwards with constant velocity If the object is pushed slightly upwards it will slow down until it comes to rest If the object is pushed slightly downwards it will slow down until it comes to rest If the object is pushed slightly upwards it will keep moving upwards with constant velocity The mean density of the object is the same as that of the fluid

Answer 1

The time preefod of pendularm ý T= 20 5 So it does not depents on mass of the bob, But the length of string so if the mass is doubled the time period will remain same T. (13) option 2,3, and 5 will be reight. fort I, and 2 will not be applicable @ because, when you push the object in either direction the dreag forcee against the motion of the object and bring will to work it at rest