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Particles P and Q of masses 0.4kg and m kg are joined by a light inextensible string over a smooth pulley. When released Q accelerates downward at 2.45ms^-2. Find m.

This is an example of a common Mechanics 1 question. I teach a systematic approach to such questions. 

  1. Diagram - dram diagram of the pulley set up

  2. Label forces on diagra...

CN
Answered by Connor N. Maths tutor
6939 Views

Solve the following simultaneous equations: 3x + 5y = -4 and -2x + 3y = 9

Label the equations 1 and 2 We want to make it so the x are the same number - therefore we have to find a common multiple of 2 and 3 - this is 6 Therefore the equations turn into: 1) 6x + 10y = -8 2) -6x ...

KP
Answered by Krishnaa P. Maths tutor
4778 Views

What is terminal velocity? (falling bodies)

When an object falls down through a fluid (e.g. water, oil, air..) there are usually two forces acting on it. They are the weight force acting downwards and the drag force acting upwards. The weight force...

GF
Answered by George F. Physics tutor
5201 Views

To what extent did Elizabeth's authority decline in the years 1589 to 1603?

By the year 1589, Elizabeth was old and increasingly decrepid. She was disillusioned wth those around her and the death of many of her great councillors limited her ability to rule successfully. Furthermo...

FB
Answered by Fred B. History tutor
7580 Views

To what extent were Soviet policies responsible for the outbreak and development of the Cold War between 1945 and 1949?

A question that begins 'To what extent...' is often one of the better questions to answer in an exam paper, as it allows for the expression of your own opinion on the topic. A question such as 'What were ...

FR
Answered by Freddie R. History tutor
3327 Views

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