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How do you tackle a general mechanics question?

always draw free-body diagram. This will clarify the forces that are acting on the object Determine whether newton's 1st law or 2nd law that are in play, and use the equations of each. If asked about kinemat...
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Answered by Harvin I. • Physics tutor
3158 Views

How would I write the binary number 11001 in decimal form?

Answer: 25. Explanation: In the binary system, each digit can be one of two values: 0 and 1. That's two possibilities ('bi' is Latin for 'twice'). In the decimal system, each digit can take any value from 0 ...
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Answered by Katrina G. • Physics tutor
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Give the unit of energy, using only the base SI units kg, m and s.

If asked to give the units of some complicated quantity in more basic units, try to think of a physical equation you know that relates the complicated quantity (i.e. energy, units J) to other quantities. In ...
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Answered by Sjoerd B. • Physics tutor
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Why is centripetal acceleration directed inwards to the centre of the circle during centripetal motion? If I’m in a car while it’s cornering, I seem to be pushed outwards away from the centre, not inwards.

When I initially met this problem, I was slightly confused because of the car analogy above. So the way to think about this is that your body and the car are separate, and just as the car starts going around...
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Answered by Rudolfs G. • Physics tutor
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Why does the temperature of a body stay constant during a change of state?

In order to answer this question it is important to remember that an atom has energy in two forms: kinetic (energy that allows the atom to move) and potential (energy that is stored in the bonds between each...
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Answered by Arthur B. • Physics tutor
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