Title Builder Beta See instructions

Welcome to Title Builder Beta.

This small piece of kit is designed to make building your Quiz, Crossword or Puzzle question more effective. It should make finding your question easier for others and, the easier it is to find, the more likely someone is to answer it!

To build an easy to find question title simply select the paper and quiz, enter the quiz number if relevant and fill in the Publication Date. Once you’re happy click “Build Title” and the information should populate the Title field. Fill in the final required details of your question as you normally would, and click submit.

As this is a Beta we only have a limited number of papers and quizzes listed. If you think your favourite Quiz, Crossword or Puzzle should be listed here don’t hesitate to contact us.

Remember: You do not have to use the title builder - simply enter the title and question as you normally would and click submit!

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forces and dynamics

asroc | 19:49 Mon 19th Mar 2007 | Quizzes & Puzzles

3 Answers

a particle of mass m rests on a smooth plane which makes an angle B with the horizontal. It is supported by a force of magnitude P making an angle A+B with the horizontal. Determine P and the reaction of the plane on the particle.

{smooth plane ie. no fritional force.

Film Trivia

rosaceous plant

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CJ2

1. P(*g)=[m(*g) * sin(B)] / sin(A+B) so P=m*sinB/sin(A+B)
2. m(*g) * cos(B) ?

CJ2

Please can I have another try?

1. P = m.g.sinB/sin(A+B) force units.
2. 0. The weight (I assume this to be vertically downward) is balanced by the vertical upward component of P, and as the block is smooth, with no friction, there can be no reaction horizontally.

Please ignore my misguided 1st attempt.

asroc

Question Author

Great thank you!

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