Question

1. You determine the period of the pendulum motion. Keeping the length of the string constant, you replace the object with one that has bigger mass. Will the period be affected?

a. No, the period will remain the same because it depends only on the length of the string.

b. Yes, the period will increase because heavier objects have greater inertia or have greater resistance to changes in their state of motion.

c. Yes, the period will decrease because the bigger the mass, the greater the weight, the greater the effect of gravity on the pendulum motion.

d. No, the period will not be affected because the object will still travel the same arc path as before due to the constant string length.

2.  say that the floor is completely level. The toy car is given a flick sending it traveling down the track. It travels 100.0 cm in 5.0 s. For the next trial, the toy car is given a stronger flick such that it travels the 100.0 cm in 2.5 s. What can you conclude from these observation?

a. In the second trial, the toy car has twice the acceleration as in the first trial.

b. In the second trial, the flick given to the toy car is twice as strong as in the first trial.

c. All of the choices.

d. In the second trial, the toy car has twice the initial speed as in the first trial

thanks !

Answer 1