1..A particle of mass 10kg is at rest on a plane inclined at an angle (arc tan 3/4)Tan-1 3/4 to the horizontal.Contact is rough where µ(Mu)is equal to .25. It is connected by a string passing over a smooth,fixed pulley to a second particle of mass 20kg hanging freely.the system is released from rest.
(ii)Tension in the string
(iii)Force on the pulley
Have you drawn a large, clearly labelled and multi-coloured diagram that shows all the forces acting on the two objects (including the direction of those forces)?
Originally Posted by Darragh92
Do you realise that the 10 kg object will move up the slope and the 20 kg object will move downwards?
Have you resolved (in directions parallel and perpendicular to the slope) the forces acting on the 10 kg mass?
Do you realise that the magnitude of the acceleration for each object is the same? The 20 kg object moves downwards with an acceleration of a m/s^2. The 10 kg object has an acceleration of a m/s^2 up the slope and an acceleration of 0 m/s^2 perpendicular to the slope.
Have you applied Newtons Laws of Motion to each object (for the 10 kg object you apply the Laws in the two directions)?