Physics 9702/41 — May/June 2010

Cambridge A-Level · A Level Structured Questions · worked solutions for every part, with the mark scheme

questions

100

marks

105

minutes

Topics Motion in a Circle · Electric Fields · Quantum Physics · Nuclear Physics · Magnetic Fields · Communication · +8 more

Q1Motion in a CircleFree sample

(a)

Define the radian.

(b)

A stone of weight $3.0\ \text{N}$ is fixed, using glue, to one end P of a rigid rod CP, as shown in Fig. 1.1.

Fig. 1.1

The rod is rotated about end C so that the stone moves in a vertical circle of radius $85\ \text{cm}$ .
The angular speed $\omega$ of the rod and stone is gradually increased from zero until the glue snaps. The glue fixing the stone snaps when the tension in it is $18\ \text{N}$ .

For the position of the stone at which the glue snaps,

(i)

on the dotted circle of Fig. 1.1, mark with the letter S the position of the stone,

(ii)

calculate the angular speed $\omega$ of the stone.

angular speed = ______ $\text{rad s}^{-1}$

The rest of this paper

11 more questions

Q2Temperature · Ideal Gases · Thermodynamics15M
Q3Oscillations6M
Q4Gravitational Fields · Electric Fields · Quantum Physics · Nuclear Physics11M
Q5Magnetic Fields11M
Q6Alternating Currents5M
Q7Magnetic Fields · Electric Fields · Motion in a Circle7M
Q8Quantum Physics · Nuclear Physics8M
Q9Electronics10M
Q10Medical Physics9M
Q11Communication6M
Q12Communication5M

Loading the full paper…