🔭 physics

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៖

1. **Problem statement:** A ladder of length 10 m and weight 500 N leans against a vertical wall, resting on a horizontal surface. The coefficient of friction at both contact point

1. Problem 10: Find the acceleration of a block sliding down an inclined plane at 30° with kinetic friction coefficient 0.2. 2. Formula: The acceleration $a$ down the incline is gi

1. **Problem Statement:** We have a uniform rod AB weighing 14 N with a 14 N weight fixed at point B. We want to find the weight $\varepsilon$ to be hung at point A so that the rod

1. **Problem Statement:** A ruler AB is suspended from points A and D by two vertical ropes with tensions $T_1$ and $T_2$. Two weights, 6 N and 4 N, are hanging from points C and B

1. **State the problem:** We need to find how many superhorses are required to power 100 houses, each using 1000 watts per day. 2. **Given information:**

1. **Problem statement:** A particle is projected horizontally at 20 m/sec from a height of 7.84 m. We need to find the time taken to reach the surface and the horizontal distance

1. The problem asks to identify which statements about a system of particles are incorrect. 2. Given definitions:

1. Problem 9: A body of mass 10 kg moves with constant velocity 5 m/s on a horizontal surface with coefficient of sliding friction 0.2. (i) Find the horizontal force to maintain co

1. Problem: A drone of mass 1.2 kg hovers with four propellers. Each propeller pushes 0.4 kg of air downwards per second. Find the speed of air leaving each propeller. 2. Formula:

1. **Problem statement:** Two blocks K and L slide towards each other on a frictionless surface and collide. The contact time during collision is 0.084 s. After collision, block L

1. Nyatakan masalah: Eriq mengayuh basikal sejauh 6 km dalam 20 minit, berhenti 4 minit, kemudian mengayuh lagi 4 km dalam 16 minit. Cari laju purata dalam km/j. 2. Formula laju pu

1. **Problem statement:** A golf ball is struck from point A with an initial velocity of 80 ft/s. We need to find the speed at which it strikes the ground at point B and the total

1. **Problem Statement:** Find the algebraic measure of the moment of a force of magnitude 200 N about point O. 2. **Given Data:**

1. **State the problem:** We need to find the time $t$ it takes for an object to fall 1,024 feet given the formula for distance fallen: $$s = 16t^2$$ 2. **Write the formula and plu