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A 2.4 m long plank of mass 20kg has 2 pins, each 0.5 meters from each respective plank end. A person of mass 40kg stands on the plank 0.1m from one of the pins. Calculate the magnitude of reactions at the pins for this structure to be in equilibrium.

1.) draw what is happening: 2.)Notice key points of questions: Plank is in equilibrium. This means that all forces=0 and all moment=03.) Apply force equilibrium: 4.) Apply moment equilibrium5.) fin...

ST
Answered by Samuel T. Maths tutor
2666 Views

explain the effect of a rise in government expenditure in the AD-AS framework

A rise in government expenditure shifts the aggregate demand to the right (Insert graph). We assume that there is no change to the aggregate supply and that this is a one time increase. In the short-run b...

CA
1577 Views

Describe your week-end to your friend

J'ai passé un très bon week-end. Vendredi soir après les cours je suis allée à l'anniversaire de Paul, mon ami d'enfance. On a beaucoup dansé, c'était génial. Samedi j'ai joué au tennis avec ma mère et ma...

CA
Answered by Caroline A. French tutor
1227 Views

The Treaty of Versailles was the main reason behind World War II. Discuss

For essay questions it is important to carefully read the question. Some elements are the key to answering the question. Here discuss and the main reason are essential. "Discuss" implies providi...

CA
Answered by Caroline A. History tutor
4220 Views

Explain two differences between procedural memory and episodic memory. (2017 AQA exam question)

The first difference is that procedural memory is our memory of an action, or skill. For example, how to ride a bike, drive a car, swim. Whereas episodic memory is the ability to recall specific events (e...

TL
3029 Views

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