AQA A Level Physics Mechanics Exam Questions With Correct Answers
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Course
AQA A Level Physics Mechanics
Institution
AQA A Level Physics Mechanics
AQA A Level Physics Mechanics Exam
Questions With Correct Answers
Difference between a scalar and a vector - answervector has magnitude (size) and direction,
whereas scalar only has magnitude (size).
Examples of scalars - answerspeed, mass, time, energy, power
Examples of vectors - answerdispl...
convert length into appropriate quantity (using scale) to find magnitude of resultant vector
Resolving vectors into two perpendicular components - answer✔
Resolving components along, and perpendicular to, an inclined slope - answer✔slide down slop
= sine
force dow slope = sintheta
Conditions for equilibrium of two or three coplanar forces acting at a point - answer✔total
resultant force equals zero
or
if the vectors representing the forces are added together they will form a closed triangle.
Two conditions for a body to remain in equilibrium - answer✔1. resultant force acting on body is
zero
2. resultant moment about any point is zero
object could be stationary OR travelling at constant velocity
Definition of the moment of a force about a point - answer✔force multiplied by the
perpendicular distance from the point to the line of action of the force.
Units of moment - answer✔Nm
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