Physics Fundamentals
2nd Edition
ISBN: 9780971313453
Author: Vincent P. Coletta
Publisher: PHYSICS CURRICULUM+INSTRUCT.INC.
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Chapter 5, Problem 2Q
(a)
To determine
The magnitude of normal force each of the glass slides.
(b)
To determine
Value of
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a 600 N block rests of a 30 degrees plane. if the coefficient of friction is 0.20 , what is the value of the force, P applied horizontally to keep the block moving up the plane
The coefficient of static friction between a block of mass
m and an incline is = 0•3. (a) What can be the
maximum angle e of the incline with the horizontal so
that the block does not slip on the plane ? (b) If the incline
makes an angle 8/2 with the horizontal, find the
frictional force on the block.
3–6. Determine the force in member C and its angle 0 for equilibrium. The forces are concurrent
at point O. Take F = 8 kN.
Problems 3-5/6
9 kN
1088
00
000.
100
B
C
X
Chapter 5 Solutions
Physics Fundamentals
Ch. 5 - Prob. 1QCh. 5 - Prob. 2QCh. 5 - Prob. 3QCh. 5 - Prob. 4QCh. 5 - Prob. 5QCh. 5 - Prob. 6QCh. 5 - Prob. 7QCh. 5 - Prob. 8QCh. 5 - Prob. 9QCh. 5 - Prob. 10Q
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- A block of mass 3.40 kg is pushed up against a wall by a force P that makes an angle of-50.0 angle with the horizontal as shown below. The coemicient of static triction between the block and the wal is 0.241. (a) Determine the possible values for the magnitude of P that allow the block to remain stationary. (If there is no maximum, enter NONE in that answer blank.) Pml- (b) What happens if IPI has a larger value than P O The block sides up the wall, O The block does not side along the wal. O The block sides down the wall. What happens if PI has a smaller value than Pl? O The block slides up the wall. O The block does not slide along the wall. O The block slides down the wall. (c) Repeat parts (a) and (b) assuming the force makes an angle of 15.0 with the horizontal. Determine the possible values for the magnitude of P that allow the block to remain stationary. (f there is no maximum, enter NONE in that answer blank.) ma What happens if PI has a larger value than Pmal? O The block…arrow_forwardWith this question do I need to add the y component of the applied force to the mg force or substract in this question. Can you also tell me when I do which operation?arrow_forwarda 10 kg sphere is supported on a frictionless plane inclined at angle u = 45° from the horizontal. Angle f is 25°. Calculate the tension in the cable.arrow_forward
- A large box of mass 11.4 kg sits on a ramp that makes an angle of 30.1 degrees with the horizontal. The surface of the ramp is rough and the coefficients of static and kinetic friction are given as 0.56 and 0,38, respectively. We exert a force up the ramp (parallel to the ramp surface) so that the box does not move. Calculate the maximum and the minimum magnitude of the force we can exert so that the box does not move. Enter the difference between the maximum and the minimum force values here: Fmax-Fmin (in Newtons). On your paper, show all the forces on free-body diagrams, clearly show your work, your derivation and calculations. Make sure to include your physics-based reasoning.arrow_forwardA 30.0-kg girl in a swing is pushed to one side and held at rest by a horizontal force F→ so that the swing ropes are 30.0° with respect to the vertical. (a) Calculate the tension in each of the two ropes supporting the swing under these conditions. (b) Calculate the magnitude of F→.arrow_forwardA loaded penguin sled weighing 61.0 N rests on a plane inclined at angle θ = 23.0° to the horizontal (see the figure). Between the sled and the plane, the coefficient of static friction is 0.260, and the coefficient of kinetic friction is 0.120. (a) What is the minimum magnitude of the force ?→�→, parallel to the plane, that will prevent the sled from slipping down the plane? (b) What is the minimum magnitude F that will start the sled moving up the plane? (c) What value of F is required to move the sled up the plane at constant velocityarrow_forward
- Logs weighing 1.3 kg and 2.2 kg lie on a flat surface and are connected by a rope that breaks at a force of 20 N. The coefficient of friction between the lighter log and the base is 0.50, and between the heavier log and the base 0.30. With what maximum force can we pull the lighter log so that the string does not break?arrow_forwardA 1.6 kg book is pressed against a wall with a perpendicular force. The coefficient of friction is 0.25. What minimum force must be applied to the book so that is doesn’t slide down the wall.arrow_forwardA pair of wedges is used to lift a crate as shown in The crate weighs 4000 lb, the wedge angle e is Fig. 18°, and the coefficient of friction is 0.15 at all surfaces. The weight of the wedges is negligible. Determine The force P necessary to remove the wedge or to pre- vent the wedge from slipping out Warrow_forward
- A SEWAGE WORKER is inside a large underground aqueduct (diameter » a man’s height) of circular cross section, and so smooth that friction is negligibly small. He has a ladder which is the same length as the diameter of the aqueduct. He wishes to inspect something in the roof. He mounts the ladder and continues to climb until he reaches the other end. What happens?arrow_forwardA rope exerts a force of 50 N on a box to keep it stationary. If the box is on a plane inclined 25° from the horizontal and the coefficient of static friction is 0.29, calculate the normal force exerted on the box.arrow_forwardThree concurrent forces have magnitude of 4O, 60 and 50 N, respectively. Determine the smallest angle among them that will produce a state of equilibrium.arrow_forward
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