1. How does the doubling of the mass of a simple pendulum affect its period?

1.

How does the doubling of the mass of a simple pendulum affect its period?

a. It doubles 

b. It halves 

c. It quadruples 

d. It increased by a factor of 1.41 

e. It doesn't change

2.

A 10 N bob swings on a long massless string as a simple pendulum. The tension in the string has a maximum value of 14 N. Find the centripetal acceleration at that point.

a. 2 m/s2

b. 3 m/s2

c. 4 m/s2

d. 6 m/s2

e. 0.4 m/s2

3.

An astronaut (whose weight is 1000 N on Earth) travels to planet X. Planet X has four times the mass and twice the radius of the Earth. Determine the weight of the astronaut on planet X.

a. 1000 N

b. 2000 N

c. 500 N

d. 250 N

e. 4000 N

4.

Refer to the sketch in the previous question. In which direction is the friction force acting on the dime?

a. Into the first quadrant

b. Into the second quadrant

c. Into the third quadrant

d. Into the fourth quadrant