Slider crank mechanism with 10cm crank and 50cm rod at 60°

[bobmarly12345]

Homework Statement

The instantaneous configuration of a slider crank mechanism has a crank GH 10cm long, the connecting rod HP is 50cm. The crank makes an angle of 60 degree with the inner dead centre position and is rotating at 110 rev/min. Determine the velocity of the piston P and the angular velocity of the link HP.

urgent help is needed! i have an exam soon & i have no example of this type of question to work from. please help!

 

[tiny-tim]

hi bobmarly12345

can you provide a diagram?

 

[bobmarly12345]

here is the photo of the diagram

 

[tiny-tim]

ah!

ok, call the G angle θ, and the P angle ψ (so dθ/dt = ω),

find the equation relating θ and ψ,

then use the chain rule to find dψ/dt ​