Forces

Question 1

Resolving forces notation

Answer 1

R(up arrow) = ….

R(->) = …

Question 2

Resultant force vector

Answer 2

By adding up each individual vector

Question 3

Connected objects

Answer 3

Two connected (in contact or connected by an inextensible rod/string) objects moving in the same direction can be represented as a single particle

Question 4

Finding Reaction forces

Answer 4

Find the forces acting on an object and what the reaction force must be for the net force to be equal to the resultant force

Question 5

Pulley

Answer 5

A wheel on which a rope,string or cable passes

Question 6

When is the tension in each part of the string the same?

Answer 6

The string is light and the pulley is smooth

Question 7

Writing an equation of motion

Answer 7

Add or subtract the forces based on direction and set equal to ma

Question 8

Force exerted by a string on the pulley

Answer 8

2x tension

Question 9

If a particle hits the floor or the string breaks

Answer 9

The other doesn’t instantly stop, if on a flat surface the only force is friction, if vertical only weight

Question 10

Force when attached at a hinge

Answer 10

Towards the wall it is attached to, can be at an angle