6. In a Figure below, the block of mass m is at rest on an inclined plane that makes an angle 0 with the horizontal. Theforce of static friction f must be such that:a. f> mgO b. f > mg cose.c. f > mgsine.d. f = mg cosee. f = mg sin0.

We have a box of mass m which is resting on a inclined plane of angle θ. We need to find the force…

6. In a Figure below, the block of mass m is at rest on an inclined plane that makes an angle with the horizontal. The force of static friction f must be such that: 0 a. f>mg b.f > mg cose. c. f> mg sine. d. f = mg cose = mg sin0. De.f

6. In a Figure below, the block of mass m is at rest on an inclined plane that makes an angle with the horizontal. The force of static friction f must be such that: 0 a. f>mg b.f > mg cose. c. f> mg sine. d. f = mg cose = mg sin0. De.f

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter4: Dynamics: Force And Newton's Laws Of Motion

Section: Chapter Questions

Problem 22CQ: Ina traction setup a broken bone, with pulleys and rope available, how might we be able to Increase...

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Ina traction setup a broken bone, with pulleys and rope available, how might we be able to Increase the force along the tibia using the weight? (See Figure 4.30) (Note that the tibia is the shin bone shown in this image.) Figure 4.30 A leg is suspended by a traction system in which wires used to transmit forces. Frictionless pulleys crw.ge the direction of the force T without changing Its magnitude.
Measuring coefficients of friction A coin is placed near one edge of a book lying on a table, and that edge of the book is lifted until the coin just slips down the incline as shown in Figure P4.82. The angle of the incline, C, called the critical angle, is measured. (a) Draw a free-body diagram for the coin when it is on the verge of slipping and identify all forces acting on it. Your free-body diagram should include a force of static friction acting up the incline. (b) Is the magnitude of the friction force equal to sn for angles less than C? Explain. What can you definitely say about the magnitude of the friction force for any angle c? (c) Show that the coefficient of static friction is given by s = tan c. (d) Once the coin starts to slide down the incline, the angle can be adjusted to a new value c c such that the coin moves down the incline with constant speed. How does observation enable you to obtain the coefficient of kinetic friction? Figure P4.82
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