Try these Take g = 9.8 ms? la A parcel of mass 2 kg lies at rest on a rough horizontal surface, as shown. i Draw a force diagram showing the forces acting on the parcel. ii Calculate the normal contact force, R. b The parcel is now pushed with a horizontal force P, as shown, so that it is just on the point of sliding. i Draw a force diagram showing the forces now acting on the parcel. ii If the coefficient of friction is 0.5, find the value of P when the parcel is on the point of sliding.

Try these Take g = 9.8 ms? la A parcel of mass 2 kg lies at rest on a rough horizontal surface, as shown. i Draw a force diagram showing the forces acting on the parcel. ii Calculate the normal contact force, R. b The parcel is now pushed with a horizontal force P, as shown, so that it is just on the point of sliding. i Draw a force diagram showing the forces now acting on the parcel. ii If the coefficient of friction is 0.5, find the value of P when the parcel is on the point of sliding.

International Edition---engineering Mechanics: Statics, 4th Edition

4th Edition

ISBN:9781305501607

Author:Andrew Pytel And Jaan Kiusalaas

Publisher:Andrew Pytel And Jaan Kiusalaas

Chapter7: Dry Friction

Section: Chapter Questions

Problem 7.50P: The block of weight W is pulled by the force P inclined at the angle to the horizontal. Find the...

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