NEET Chemistry Structure Of Atom Triangle Law,Polygon Law & Lamis Theorem MCQs

Three coplanar forces $F_1$, $F_2$, and $F_3$ act on a particle, maintaining it in equilibrium. If $F_1$ and $F_2$ have magnitudes of 10 N and 15 N respectively, and the angle between them is $120^\circ$, what is the minimum possible magnitude of $F_3$?

Four forces acting at a point are in equilibrium. Three of the forces are 10 N at $0^\circ$, 15 N at $60^\circ$, and 20 N at $150^\circ$ (angles measured counterclockwise from the positive x-axis). What is the magnitude and direction of the fourth force?

Two strings support a weight of 100 N. The tensions in the strings are $T_1$ and $T_2$, and the angle between them is $120^\circ$. If $T_1$ makes an angle of $30^\circ$ with the vertical, what is the value of $T_2$?

A particle is in equilibrium under the action of three forces $\vec{P}$, $\vec{Q}$, and $\vec{R}$. If the angle between $\vec{P}$ and $\vec{Q}$ is doubled and the magnitude of $\vec{Q}$ is halved, while the other forces remain unchanged, which statement is true for the new equilibrium condition?

Two forces of magnitudes 3 N and 4 N act at a point at right angles to each other. A third force F is applied at the same point such that the system is in equilibrium. The magnitude and direction of F relative to the 3 N force are:

Three forces $F_1$, $F_2$, and $F_3$ are acting on a particle such that the particle is in equilibrium. If $F_1$ = 10 N and $F_2$ = 15 N, and the angle between $F_1$ and $F_2$ is 120°, then what is the magnitude of $F_3$?

A body is acted upon by three forces of magnitudes 2 N, 4 N, and 3 N, respectively. The angle between the first two forces is 60°, and the angle between the last two forces is 90°. If the body is in equilibrium, which of the following statements about the forces is correct?

Two forces of 5 N and 10 N are acting at a point with an angle of 60° between them. Which of the following cannot be the magnitude of the resultant force?

A weight of 10 N is suspended by two strings inclined at 30° and 60° to the vertical. The tensions in the strings are $T_1$ and $T_2$, respectively. Which of the following is correct?

Two forces of 3 N and 4 N act on a point at right angles to each other. According to the triangle law of vector addition, what is the magnitude of their resultant?