Scheme (Merged) Friday 16 May 2025 [VERIFIED]
, 2
Do not write
outside the
Answer all questions in the spaces provided. box
1 A particle travels around a horizontal circle of radius r metres with a constant
angular speed of ω radians per second.
State an expression for the magnitude of the acceleration, in m s–2, of the
particle.
Circle your answer.
[1 mark]
ω ω2
r2ω rω2 r
r2
2 State the dimensions of power.
Circle your answer.
[1 mark]
ML2T ML2T –1 ML2T –2 ML2T –3
G/Jun25/7366/2M
, 3
Do not write
outside the
3 A light elastic string has a modulus of elasticity of 20 newtons and a natural length box
of 0.5 metres.
One end of the string is attached to a fixed point.
A particle of weight 25 newtons is attached to the other end of the string.
The particle hangs in equilibrium with the string vertical.
Find the extension of the string.
[2 marks]
Turn over for the next question
G/Jun25/7366/2M