Physics 9702/23 — May/June 2017

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

questions

marks

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Topics Physical Quantities and Units · Dynamics · Work, Energy and Power · Electric Fields · Kinematics · Deformation of Solids · +4 more

Q1Physical Quantities and UnitsDynamicsFree sample

(a)

Two forces, with magnitudes $5.0\text{ N}$ and $12\text{ N}$ , act from the same point on an object.
Calculate the magnitude of the resultant force $R$ for the forces acting

(i)

in opposite directions,

$R$ = ______ $\text{N}$

(ii)

at right angles to each other.

$R$ = ______ $\text{N}$

(b)

An object X rests on a smooth horizontal surface. Two horizontal forces act on X as shown in Fig. 1.1.

Fig. 1.1

A force of $55\text{ N}$ is applied to the right. A force of $18\text{ N}$ is applied at an angle of $115^{\circ}$ to the direction of the $55\text{ N}$ force.

(i)

Use the resolution of forces or a scale diagram to show that the magnitude of the resultant force acting on X is $65\text{ N}$ .

(ii)

Determine the angle between the resultant force and the $55\text{ N}$ force.

angle = ______ $^{\circ}$

(c)

A third force of $80\text{ N}$ is now applied to X in the opposite direction to the resultant force in (b).

The mass of X is $2.7\text{ kg}$ .

Calculate the magnitude of the acceleration of X.

acceleration = ______ $\text{m s}^{-2}$

The rest of this paper

6 more questions

Q2Dynamics9M
Q3Electric Fields · Kinematics · Work, Energy and Power12M
Q4Deformation of Solids · Work, Energy and Power6M
Q5Superposition · Physical Quantities and Units10M
Q6Electricity · D.C. Circuits11M
Q7Particle Physics3M

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