6. Intro to Forces (Dynamics)

A block of mass $m$ hangs at rest from a rope attached to the ceiling. What is the tension $T$ in the rope?

When multiple forces act on an object, what determines the object's acceleration?

A force $f$ acts at an angle $\theta$ with respect to a pole. Which expression gives the magnitude of the component of $f$ projected along the pole?

Which type of force does not cause a change in motion of an object?

Which of the following is a force that acts on a heavier-than-air flying vehicle?

Three point charges are placed along the x-axis: $q_1$ at $x=0$, $q_2$ at $x=a$, and $q_3$ at $x=b$ (with $0<a<b$). What is the x-component of the total force exerted on the third charge by the other two? (Assume all charges are stationary and the system is in vacuum.)

When you pass a large truck during rain or snow, which of the following is most likely to occur?

Two identical metal balls are suspended by insulating threads and are brought into contact, then separated. If one ball was initially charged and the other was neutral, what happens to the charges on the balls after separation?

Two forces, $F_1$ = $10$ $N$ acting along the positive x-axis and $F_2$ = $10$ $N$ acting along the positive y-axis, are applied to an object. What is the magnitude of the resultant force and the angle it makes with the positive x-axis?

What is the net force acting on an apple that weighs $1N$ when you hold it at rest above your head?

An object moves along a straight line and is at position A, where its velocity is decreasing in the positive $x$-direction. What is the direction of the net force acting on the object at position A?

When replacing a system of multiple forces acting on a rigid body with an equivalent resultant force, which of the following statements is correct about the resultant force and its point of application?

Which of the following situations depicts an object experiencing unbalanced forces? Choose the correct option.

In the context of forces and kinematics, which force is best represented by $fg$?

In the context of forces and kinematics, when replacing the force system acting on a post by a single resultant force, what does the resultant force represent?