Types of Forces

Front

What is the formula for calculating the spring constant (k)?

Back

k = F/x, where F is the force applied and x is the extension of the spring.

Front

What is Hooke's Law?

Back

Hooke's Law states that the force exerted by a spring is directly proportional to its extension or compression, within the elastic limit of that spring.

Front

If a spring extends 1.5m under a load of 10N, what is its spring constant?

Back

6.7 N/m.

Front

What is the effect of a net force on a spring?

Back

A net force applied to a spring will cause it to stretch or compress, depending on the direction of the force.

Front

How do you calculate the extension of a spring given its spring constant and the force applied?

Back

x = F/k, where x is the extension, F is the force, and k is the spring constant.

Front

What direction does friction act relative to motion?

Back

Friction acts in the opposite direction to the motion.

Front

What happens to the perceived weight of a person in an elevator accelerating upwards?

Back

They feel heavier than normal.

Front

What happens to the perceived weight of a person in an elevator accelerating downwards?

Back

They feel lighter than normal.

Front

Define gravitational force.

Back

Gravitational force is the attractive force between two masses, proportional to the product of their masses and inversely proportional to the square of the distance between their centers.

Front

What is the difference between static and kinetic friction?

Back

Static friction acts on objects at rest, preventing them from starting to move, while kinetic friction acts on moving objects, opposing their motion.