CP Physics A Module 06

Front

What is torque?

Back

Torque is a measure of the rotational force applied to an object, calculated as the product of the force and the distance from the pivot point (lever arm) at which the force is applied, and the sine of the angle between the force and the lever arm.

Front

How do you calculate torque?

Back

Torque (τ) = Force (F) × Distance (r) × sin(θ), where θ is the angle between the force and the lever arm.

Front

What is momentum?

Back

Momentum is the product of an object's mass and its velocity, represented by the formula p = m × v.

Front

How is the change in momentum calculated?

Back

Change in momentum (Δp) = Force (F) × Time (t).

Front

What is the principle of conservation of momentum?

Back

The total momentum of a closed system remains constant if no external forces act on it.

Front

What is work in physics?

Back

Work is done when a force causes an object to move, calculated as Work (W) = Force (F) × Distance (d) × cos(θ), where θ is the angle between the force and the direction of motion.

Front

What does efficiency mean in the context of work?

Back

Efficiency is the ratio of useful work output to the total work input, often expressed as a percentage.

Front

How do you calculate efficiency?

Back

Efficiency (%) = (Useful Work Output / Total Work Input) × 100.

Front

What is the relationship between mass and acceleration in Newton's second law?

Back

Newton's second law states that Force (F) = Mass (m) × Acceleration (a).

Front

What is the formula for calculating gravitational force?

Back

Gravitational Force (F) = G × (m1 × m2) / r², where G is the gravitational constant, m1 and m2 are the masses, and r is the distance between their centers.