a A crate, which has a weight of W, is placed on an inclination. The force P is applied to prevent the crate from sliding down the inclination. a) Determine the minimum required force P, if the coefficient of static friction is us1 b) Determine the friction force (in magnitude) acting at the bottom of the crate if the force P=P, and the coefficient of static friction is usj. c) Determine the minimum required force P, if the coefficient of static friction is u2. Use W=450 N, a=35°, µ1=0.4, Hs2=0.75 and P1=115 N. The minimum required force P in N is (if the coefficient of static friction is us1) (round to the nearest integer): N The magnitude of friction in N is (if the force P-P, and the coefficient of static friction is us1) (round to the nearest integer): N The minimum required force P in N is (if the coefficient of static friction is us2) (round to the nearest integer): N

a A crate, which has a weight of W, is placed on an inclination. The force P is applied to prevent the crate from sliding down the inclination. a) Determine the minimum required force P, if the coefficient of static friction is us1 b) Determine the friction force (in magnitude) acting at the bottom of the crate if the force P=P, and the coefficient of static friction is usj. c) Determine the minimum required force P, if the coefficient of static friction is u2. Use W=450 N, a=35°, µ1=0.4, Hs2=0.75 and P1=115 N. The minimum required force P in N is (if the coefficient of static friction is us1) (round to the nearest integer): N The magnitude of friction in N is (if the force P-P, and the coefficient of static friction is us1) (round to the nearest integer): N The minimum required force P in N is (if the coefficient of static friction is us2) (round to the nearest integer): N

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 7.72P

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