Physics for Scientists and Engineers
6th Edition
ISBN: 9781429281843
Author: Tipler
Publisher: MAC HIGHER
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Chapter 5, Problem 30P
To determine
The widest stance that one can take when standing on a dry, icy surface.
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Chapter 5 Solutions
Physics for Scientists and Engineers
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- Problem 2: Determine the force P necessary to start the V-shaped wedge to the right if the coefficient of friction is f= 0.445 at each of the three surfaces of contact. Wg =1000N WA =200N в P- 30° 150arrow_forwardA 1.5 kg block resting ina rough flat surface is pulled by a string. The string makes an angle of 20 degress with the horizontal. The coefficient of static friction between the blodk and the surface is 0.35. What is the maximum tension in the string to keep the block unmoved?arrow_forwardYou can hold your 2.5 kg textbook against the wall, preventing it from slipping down, if you press your hand against it horizontally. Suppose the coefficient of static friction between the book and the wall is 0.50, and there is no friction between your hand and the book. What minimum force do you need to apply to keep the book from slipping down?arrow_forward
- A 560-g squirrel with a surface area of 930 cm2 falls from a 5.0-m tree to the ground. Estimate its terminal velocity. (Use a drag coefficient for a horizontal skydiver.) What will be the velocity of a 56-kg person hitting the ground, assuming no drag contribution in such a short distance?arrow_forwardA 75.0-g arrow, fired at a speed of 110 m/s to the left, impacts a tree, which it penetrates to a depth of 12.5 cm before coming to a stop. Assuming the force of friction exerted by the tree is constant, what are the magnitude and direction of the friction force acting on the arrow?arrow_forwardWhile digging a small hole prior to planting a tree, a homeowner encounters rocks. If he exerts a horizontal 239-N force on the prybar as shown, what is the horizontal force exerted on rock C? Note that a small ledge on rock C supports a vertical force reaction there. Neglect friction at B. Complete solutions (a) including and (b) excluding the weight of the 17-kg prybar. A 239 N 1550 mm 16° B 230 mm Answers: (a) Including weight, Fc- i (a) Excluding weight, Fe- i Narrow_forward
- A 2.17-kg object is situated at rest on a horizontal surface with a static friction coefficient of 0.56. Calculate the maximum force of the static friction.arrow_forwardA box of mass 2 kg is placed on a rough surface that is inclined at an angle of 30 to the horizontal. Calculate the amount of static friction that keeps the box still on the surface?arrow_forwardA 100kg box is at rest on a 10◦ ramp and is being held up by the force of static friction. What is the minimum coefficient of static friction between the box and the ramp to make sure that the box doesn't slip?arrow_forward
- An endless chain of weight W rests in the form of a circular band round a smooth vertical cone which has its vertex upwards. Find the tension in the chain due to its weight, assuming the vertical angle of the cone to be 2a.arrow_forwardA coffee cup on the horizontal dashboard of a car slides forward when the driver decelerates from 45 km/h to rest in 3.5 s or less, but not if she decelerates in a longer time.What is the coefficient of static friction between the cup and the dash? Assume the road and the dashboard are level (horizontal).arrow_forwardA 5.00-kg block is placed on top of a 12.0-kg block that rests ona frictionless table. The coefficient of static friction between the twoblocks is 0.600. What is the maximum horizontal force that can beapplied before the 5.00-kg block begins to slip relative to the 12.0-kgblock, if the force is applied to (a) the more massive block and (b) theless massive block? why in this question the force between blocks is not taking into account? Each block affect another onearrow_forward
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