Science: Free Body Diagrams

A book rests on a table. Identify all forces acting on the book and state the direction of each force.

A box is pushed to the right across a rough floor at constant speed. Identify all forces acting on the box.

A ball is falling straight down through the air. Identify the forces acting on the ball before it reaches terminal velocity.

A sled is pulled to the right by a rope across snow. Friction is small but not zero. Identify all forces acting on the sled.

A lamp hangs motionless from the ceiling by a cord. Identify all forces acting on the lamp.

A car moves around a flat circular track at constant speed. Identify the horizontal force needed for this motion and its direction.

A crate is pulled upward by a rope and accelerates upward. Identify the forces acting on the crate and compare their sizes.

A skydiver falls at terminal velocity. Identify the forces acting on the skydiver and explain their relationship.

A block sits on a ramp and does not slide. Identify the forces acting on the block.

A hockey puck slides to the right on nearly frictionless ice after being hit. Identify the forces acting on the puck after it leaves the stick.

An elevator moves upward at constant speed. Identify the forces acting on the elevator and describe their balance.

A person pushes a wall, but the wall does not move. Identify the forces acting on the wall due to the push and its support.

A satellite orbits Earth in nearly circular motion. Identify the main force acting on the satellite.

A block is pulled left across a rough surface and slows down. Identify the forces acting on the block and explain the slowing motion.

A backpack rests on the floor of a bus that is accelerating forward. If the backpack does not slide relative to the floor, identify the horizontal force acting on the backpack.