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A particle of mass m is placed on an slope with an incline 30 degrees. Once released it accelerates down the line of greatest slope at 2 m s^-2. What is the coefficient of friction between the particle and the slope?

Resolve forces perpendicular to the slope. No acceleration in this direction hence resultant force in this direction must equal zero:R = mg * cos(30) Apply Newtons second law in the direction parallel to the...
DH
Answered by Daniel H. • Maths tutor
3995 Views

How Should I Plan an Essay in the Exam?

There are many different ways you can plan an essay response in exam situations and each person will approach it slightly differently. I advise you to practice planning in timed conditions and explore lots o...
SH
4288 Views

How do I expand and simplify a double bracket equation?

For example: 3(2a + 5) + 5(a - 2) The key is to approach this question in two steps, with the first step being to expand the brackets before then simplifying where possible. A good method for expanding the b...
SB
Answered by Sonu B. • Maths tutor
8130 Views

Find the roots for the quadratic equation x^2 +2x-3 = 0

I would show the student two methods of solving this answer.The first method by:Finding two numbers that multiply to make -3 and simultaneously add to make +2.The two numbers that satisfy this is +3 and -1. ...
AN
Answered by Adibah N. • Maths tutor
10537 Views

How is blood glucose regulated?

High blood glucose levels - such as following a large, carbohydrate rich meal. The increase is detected by Beta cells of the pancreas, which release insulin (a hormone) into the blood. Insulin acts on cells ...
LK
Answered by Lois K. • Biology tutor
2961 Views