6. Intro to Forces (Dynamics)

A book with a weight of $12–N$ is at rest on a flat table. How many newtons of support force does the table provide?

A $1.83\mathrm{kg}$ book is placed on a flat desk. What is the magnitude of the normal force exerted on the book by the desk? (Assume $g=9.8m/s^2$ and neglect any other forces.)

Suppose three identical pucks (A, B, and C) are each struck by different sticks, causing them to accelerate at different rates. If puck A accelerates at $2 m/s^2$, puck B at $4 m/s^2$, and puck C at $3 m/s^2$, which puck experienced the strongest force, and how do you know?

A car and a dump truck are involved in a head-on collision and come to rest after the collision. Which statement about the forces experienced by the car and the dump truck during the collision is correct?

At the very top of her swing, does the rope supporting the swing exert a force on the girl, and if so, what is the direction of this force?

A uniform beam of length $L$ and mass $m$ is hinged at point A (a fixed support) and rests horizontally. A downward force $F$ is applied at the free end B. What is the vertical reaction force at support A?

If two forces $F_1$ and $F_2$ act at angles ${\theta }_1$ and ${\theta }_2$ with respect to the x-axis, what is the x component $F_x$ of the resultant force?

When a coin is tossed straight upward and reaches the very top of its path (momentarily at rest), how many forces are acting on the coin at that instant (neglecting air resistance)?

Which of the following is a property that all series circuits share in the context of forces and kinematics?

A scallop has a weight of $0.25 n$. If a net force of $0.10 n$ is applied to the scallop, how does this force compare to its weight?

A uniform beam of length $L$ and mass $m$ rests horizontally and is supported at its ends by supports A and B. If a downward point load $P$ is applied at a distance $a$ from support A, which of the following gives the correct expressions for the reaction forces at supports A ($R_A$) and B ($R_B$)?

Which statement best describes the difference between an open circuit and a closed circuit?

In a game of tug-of-war, two teams pull on opposite ends of a rope with equal but opposite forces of magnitude $F$. What is the net force on the rope?

In a rigid lever system, which of the following best describes the force applied at the handle of the lever when the lever is in equilibrium?

A book of mass $m$ rests on a horizontal table. If the book is at rest and no other forces act on it except gravity and the normal force from the table, what is the net force on the book?