Answer to Question #276392 in Physics for Rakibul

Question

(a) Define the force.

(b) Explain the different types of force with appropriate diagrams.

(c) Explain the Newton’s law of motion-review. A 20 kg block and a 15 kg block are

hanging on opposite sides of a pulley (see picture). Assuming a frictionless,

massless pulley, determine the acceleration of the blocks once they are released

from res

Answer 1

In physics, a force is an influence that can change the motion of an object. 

Some of the most important types of force are as follows: 1. Frictional force 2. Magnetic force 3. Electrostatic force 4. Gravitational force.

In the first law, an object will not change its motion unless a force acts on it. In the second law, the force on an object is equal to its mass times its acceleration. In the third law, when two objects interact, they apply forces to each other of equal magnitude and opposite direction.

$$a=\frac{20-15}{20+15}9.8=1.4\frac{m}{s^2}$$