Free Body Diagrams Self Test

Question 1

diagram of puck on sloping ice

A group of neighbourhood children play ice hockey. Unfortunately, the rink is on a slope. What forces are acting on the puck?

diagram of forces that may be acting on the puck, options A - K

(C) Correct!

 

Question 2

piano on a slope being moved with a rope

The Music Department wants to move a piano up a flight of stairs. The movers tie a rope to the piano, and pull it up a ramp placed over the stairs. The ramp is very smooth (no friction). What forces are acting on the piano?

diagram of possible forces acting on the piano

(B) Correct!

 

Question 3

close up of clock with pendulum

Assuming the pendulum in the figure consists of a massive bob hung on a light rope, what forces are acting on the bob?

diagram of possible forces acting on the pendulum

(A) Correct!

 

Question 4 

diagram of a figure in an elevator

You take the elevator to the fourth floor. What forces are acting on you while in the elevator? 

diagram of possible forces acting on figure in elevator

(E) Correct!

 

Question 5

diagram of pendulum swinging in a horizontal circle

A pendulum swings in a horizontal circle. What forces are acting on it?

diagram of possible forces acting on pendulum

(D) Correct!

 

Question 6

diagram of person pushing two boxes A and B

You push two boxes down the hall over a rough floor. What forces are acting on box A?

diagram showing possible forces acting on box A

 (K) Correct!

 

Question 7

diagram of person pushing two boxes A and B

You push two boxes down the hall over a smooth floor (no friction). What forces are acting on box B?

possible forces acting box B

(H) Correct!

 

Question 8

diagram of truck with a small box on the front

A truck accelerates so quickly that a box in front of it does not fall. What forces are acting on this box?

possible forces acting on the small box on the front of the truck

(G) Correct!

 

Question 9

two boxes stacked box B on the bottom is bigger than box A, box B is accelerating to the right while box A rests on top

Box B accelerates constantly to the right while box A sits on top of it. What forces are acting on box A?

diagram of possible forces acting on box B

 (I) Correct!

 

Question 10

two books joined together with a rope sitting on either side of a ramp

A physics text and a novel are joined together by a rope as in the figure. What forces are acting on the text if it is sliding down the ramp?

diagram of possible forces acting on text book

(J) Correct!

 

Question 11

two books joined together with a rope sitting on either side of a ramp

A physics text and a novel are joined together by a rope. What forces are acting on the novel if the text is sliding down the ramp?

diagram of possible forces acting the novel if the text book is sliding down the ramp

 (F) Correct!