QCM : Fundamentals of Mechanics — 10 questions

Explication

Kinematics is the study of motion without considering forces, focusing on displacement, velocity, and acceleration.

Explication

The period of simple harmonic motion is given by T = 2π √(m/k), depending on the mass m and the spring constant k. This formula was provided in the sheet and is fundamental to understanding oscillations in springs.

Explication

The mechanics section focuses on the principles governing motion and forces, which are fundamental to understanding physical interactions in various systems.

Explication

Newton’s second law, F=ma, relates the net force acting on a body to its acceleration and is fundamental because it describes how forces influence motion, forming the basis for dynamics.

Explication

Newton's second law states that force equals mass times acceleration, expressed as F = ma, which is fundamental in dynamics.

Explication

Moment of inertia depends on how mass is distributed relative to the axis and influences angular acceleration when a torque is applied, analogous to mass in linear motion.

Explication

The restoring force in spring oscillations is proportional and opposite to displacement, described by F = -kx, which results in SHM.

Explication

Static equilibrium requires both the net force and the net moment (torque) to be zero, ensuring no change in the body's state of rest or uniform motion.

Explication

Power measures the rate of doing work, given by P=W/t, as highlighted in the sheet under work and energy.

Explication

Static friction acts to prevent the initiation of motion between surfaces in contact, while kinetic friction opposes motion once it has started, as clarified in the section on friction.