Physics Final: proportional reasoning

Front

What does it mean for an object to be in equilibrium?

Back

An object is in equilibrium when the net force acting on it is zero, meaning it can be at rest or in uniform motion.

Front

What is the condition for an object to have zero speed in oscillatory motion?

Back

The speed is zero at the maximum displacement points in oscillatory motion, where the object changes direction.

Front

What is the work-energy principle in the context of tension on a block?

Back

Tension does positive work on the block, increasing its kinetic energy when the block speeds up.

Front

What characterizes uniform motion?

Back

Uniform motion is characterized by constant speed and direction, meaning the object covers equal distances in equal intervals of time.

Front

What is apparent weight?

Back

Apparent weight is always equal in magnitude to the normal force acting on an object.

Front

What is the difference between true weight and apparent weight?

Back

True weight is the gravitational force acting on an object, while apparent weight can vary based on the object's acceleration.

Front

What is the significance of normal force in physics?

Back

Normal force is the support force exerted by a surface perpendicular to the object resting on it, counteracting gravity.

Front

How does friction affect motion?

Back

Friction opposes the motion of an object, converting kinetic energy into thermal energy.

Front

What is the principle of conservation of energy?

Back

The principle states that energy cannot be created or destroyed, only transformed from one form to another.

Front

What is the formula for calculating work done?

Back

Work done (W) is calculated as W = F × d × cos(θ), where F is the force, d is the distance moved, and θ is the angle between the force and the direction of motion.