Mathematics 9709/42 — May/June 2011

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

questions

marks

minutes

Topics Kinematics of Motion in a Straight Line · Energy, Work and Power · Forces and Equilibrium · Newton's Laws of Motion

Q1Energy, Work and PowerFree sample

A load is pulled along horizontal ground for a distance of $76\text{ m}$ , using a rope. The rope is inclined at $5^{\circ}$ above the horizontal and the tension in the rope is $65\text{ N}$ .

(i)

Find the work done by the tension.

(ii)

At an instant during the motion the velocity of the load is $1.5\text{ m s}^{-1}$ .

Find the rate of working of the tension at this instant.

The rest of this paper

6 more questions

Q2Energy, Work and Power4M
Q3Kinematics of Motion in a Straight Line · Newton's Laws of Motion7M
Q4Forces and Equilibrium8M
Q5Kinematics of Motion in a Straight Line8M
Q6Forces and Equilibrium9M
Q7Kinematics of Motion in a Straight Line10M

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