CP Physics A Module 05

Front

What is work in physics?

Back

Work is defined as the product of the force applied to an object and the distance over which that force is applied, in the direction of the force. It is calculated using the formula: Work = Force × Distance × cos(θ), where θ is the angle between the force and the direction of motion.

Front

How do you calculate pressure?

Back

Pressure is defined as the force applied per unit area. It can be calculated using the formula: Pressure = Force / Area.

Front

What is the period of rotation?

Back

The period of rotation is the time it takes for an object to complete one full rotation or cycle. It is often measured in seconds.

Front

How do you find the velocity of an object in circular motion?

Back

The velocity of an object in circular motion can be calculated using the formula: Velocity = (2 × π × Radius) / Period.

Front

What is centripetal acceleration?

Back

Centripetal acceleration is the acceleration directed towards the center of a circular path that keeps an object moving in that path. It can be calculated using the formula: a_c = v² / r, where v is the velocity and r is the radius of the circular path.

Front

What is the relationship between force, mass, and acceleration?

Back

This relationship is described by Newton's second law of motion, which states that Force = Mass × Acceleration (F = ma).

Front

What is the significance of the angle in work calculation?

Back

The angle between the force and the direction of motion affects the amount of work done. If the angle is 0°, all the force contributes to the work done; if the angle is 90°, no work is done.

Front

What is the formula for calculating the maximum speed of an object in circular motion?

Back

The maximum speed (v) can be calculated using the formula: v = √(a_c × r), where a_c is the centripetal acceleration and r is the radius of the circular path.

Front

What is the unit of work in the International System of Units (SI)?

Back

The unit of work in SI is the Joule (J), which is defined as one Newton meter (1 J = 1 N·m).

Front

What is the relationship between pressure and area?

Back

Pressure is inversely proportional to area. As the area increases, the pressure decreases for a given force, and vice versa.