6. Intro to Forces (Dynamics)

A 27-kg chandelier hangs from a ceiling on a vertical 3.4-m-long wire. What will be the tension in the wire?

A hockey puck with mass $0.160$ kg is at rest at the origin ($x = 0$) on the horizontal, frictionless surface of the rink. At time $t = 0$ a player applies a force of $0.250$ N to the puck, parallel to the $x$-axis; she continues to apply this force until $t = 2.00$ s. If the same force is again applied at $t=5.00$ s, what are the position and speed of the puck at $t=7.00$ s?

According to Newton's First and Second Laws, current flows through a circuit and all of the bulbs are lit only when the switch is in which position?

According to Newton's First and Second Laws, when a vehicle experiences pitch (such as during acceleration or braking), in which direction does the vehicle's weight shift relative to the vehicle?

A block of mass $m$ is attached to a horizontal spring with spring constant $k$ on a frictionless surface. The block is pulled a distance $A$ from equilibrium and released from rest. What is the acceleration $a_1$ of the block as it passes through its equilibrium position?

According to Newton's second law, when an unbalanced force acts on an object, what happens to the object?

If the time it took for $\mathrm{Earth}$ to complete one rotation around its axis increased, which of the following would most likely occur?

If the same force is applied to two different pairs of pliers, one with a longer handle and one with a shorter handle, which statement best describes the resulting acceleration of the pliers assuming equal mass?

Which of the following best explains why a seesaw is considered a first class lever according to $Newton’s$ laws?

According to Newton's First Law, what happens to a box if equal and opposite forces act on it at the same time?

A block is initially held at position $x=a$ on a frictionless horizontal surface and then released from rest. According to Newton's First and Second Laws, after the block is released from $x=a$, it will:

According to Newton's First and Second Laws, which type of force will cause a change in an object's motion?