Tension (College Board AP® Physics 1: Algebra-Based)

Exam Questions

5 mins5 questions

1 mark

An object of mass $m$ is at rest on a smooth horizontal table and attached to another mass $M$ which is suspended by a light inextensible string placed over a smooth pulley.

A pulley system with mass m on a horizontal surface connected by a string over a pulley to mass M hanging vertically.

Which of the following expressions correctly represents the acceleration of the two blocks when they are released from rest?

$\frac{(M + m)}{g}$
$\frac{(M + m)}{M g}$
$\frac{M g}{(M + m)}$
$\frac{M}{(M + m) g}$

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1 mark

Which of the following pairs of statements correctly describes ideal and non-ideal strings?

Ideal string
Non-ideal string
nonnegligible mass and inextensible
negligible mass and an even extension
Ideal string
Non-ideal string
negligible mass and extensible
nonnegligible mass and in extensible
Ideal string
Non-ideal string
light and extensible
negligible mass and a long extension
Ideal string
Non-ideal string
negligible mass and inextensible
nonnegligible mass and an extension that may not be the same at all points

Ideal string	Non-ideal string
nonnegligible mass and inextensible	negligible mass and an even extension

Ideal string	Non-ideal string
negligible mass and extensible	nonnegligible mass and in extensible

Ideal string	Non-ideal string
light and extensible	negligible mass and a long extension

Ideal string	Non-ideal string
negligible mass and inextensible	nonnegligible mass and an extension that may not be the same at all points

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