🔭 physics

1. **Problem Statement:** Find the magnitude and direction of the resultant force $\mathbf{R}$ from two forces $\mathbf{P}$ and $\mathbf{Q}$ given their magnitudes and angles. 2. *

1. **State the problem:** We have a distance-time graph for two particles A and B. Particle A moves along points E(0,0), F(2,15), G(6,15), and H(t,36). Particle B moves along a str

1. **Problem Statement:** A car accelerates from rest at a constant rate of $3\ \text{m/s}^2$ for $5$ seconds. Calculate the final velocity and the distance traveled during this ti

1. **Stating the problem:** We have two force vectors, $F_1 = 40$ N at $60^\circ$ to the positive X-axis, and $F_2 = 20$ N at $30^\circ$ to the negative X-axis. We want to find the

1. **Problem statement:** A man walks 10 m north and then 20 m east. We need to find his displacement. 2. **Formula:** Displacement is the straight-line distance from the starting

1. **Problem Statement:** A body moves 6 m north, 8 m east, and 10 m vertically upwards. We need to find its resultant displacement from the initial position. 2. **Formula Used:**

1. **Problem Statement:** We have a trapezium ABCD with sides AD = DC = CB = 1 m and AB = 2 m. Forces act along sides AD (1 N), DC (3 N), CB (6 N), and AC (2\sqrt{3} N). We need to

1. **Problem statement:** A 20 kg cube is placed 5 m from the rear of a truck on a horizontal floor. The coefficient of friction between the cube and the floor is 0.1. The truck ac

1. The problem is to understand the concept of speed. 2. Speed is defined as the distance traveled divided by the time taken to travel that distance.

1. **Problem statement:** A uniform rod AB of length 120 cm and weight W N is supported at points A and C. The reaction at A, $R_A$, is $\frac{2}{3}$ of the reaction at C, $R_C$. W

1. **State the problem:** A non-uniform rod AB is 10 m long with a weight of 200 N acting at point C. The rod is supported at ends A and B. The reaction force at support A is 80 N.

1. **Problem Statement:** A light rod AB of length 10 m is supported at its ends A and B. A downward force of 500 N acts at a point 2 m from end A. We need to find the magnitudes o

1. **State the problem:** A uniform rod AB of length 4 m and weight 40 N rests on supports at A and B. A weight of 60 N is placed at point C where AC = 3 m. We need to find the mag

1. **Problem statement:** A uniform rod AB of length 6 m and weight 120 N is supported at points C and D. The distances are AC = 1 m and AD = 5 m. An external weight of 80 N is pla

1. **Problem statement:** Two forces $P$ and $Q$ act on a particle at point $O$. Force $P$ has magnitude 15 N, force $Q$ has magnitude $X$ N, and the angle between $P$ and $Q$ is 1

1. The problem is to solve for the acceleration or force using the formula $f = ma$. 2. The formula $f = ma$ means force equals mass times acceleration.

1. **State the problem:** An object is suspended from a scale inside an elevator accelerating upwards at $1.25\ \text{m/s}^2$. The scale reads a mass of 45 kg. We need to find the

1. Problem 16: Calculate weights A, B, and C assuming rods have negligible mass and system is in equilibrium. 2. Use the principle of moments: For equilibrium, sum of clockwise mom

1. **Problem statement:** An object X of mass 0.3 kg moves at 3 m/s horizontally and collides with a stationary object Y of mass 0.5 kg. After collision, X moves at 2 m/s at 60° to

1. **Problem Statement:** I) Determine the time interval over which blocks X and Y are in contact.

1. បញ្ហា៖ ការដឺញបង្ហាញភាពប្រព្រឹត្តន៍យ៉ាងត្រូវបានចែកចេញជាបួនក្រុមគឺ៖ 2. ការពន្យល់៖