SP211. Worksheet 11: 6.1 Static and Kinetic Friction. For kinetic friction problems: • fk always points in the opposite direction of the relative moti...
Find the coefficient of sliding friction. FN =1760N. Ff = 400.0N. Ff = µFN. →. µ = Ff. FN. µ = Ff. FN. →. µ = 400.0N. 1760N. →. µ = 0.227. Since the trunk is moving at CONSTANT speed, the horizontal forces must be in balance (Fnet = 0). That means th
weight of the box is 55 N. Draw all the forces acting on the box. a. How large is the force of friction? b. Is the frictional force static or kinetic? c. What is the coefficient of friction? 2. If the coefficient of kinetic friction between a crate a
Forces and Friction Worksheet (Hons). 1. A little boy pushes a 12 kg. box of library books with a constant velocity along the side walk by applying a horizontal force of 96N. Draw a free body diagram for the box. Calculate the weight,. Normal force,
7) A 6.2 kg object is pulled along a horizontal surface by a force of 22.0 N. If its acceleration is 1.1 m/s2, what is the coefficient of friction between the two surfaces? 8) A 1250 kg car traveling at 60.0 km/h comes to a sudden stop in 35 m . What
4. Suppose a 10 N force is applied to the side of a 4.0 kg block that is sitting on a table. ... Coefficient of Friction Worksheet Author: The Phillips'
Friction Practice Worksheet . 1. ... 2. Suppose a 10 N force is applied to the side of a 4.0 kg block that is sitting on a table. The block
1. CALCULATING FRICTION WORKSHEET. 1. A hockey puck has a coefficient of kinetic friction of μk = 0.10. If the puck feels a normal force (FN) of 5 N, what is the frictional force that acts on the puck? (0.5 N). 2. Suppose a 10 N [R] force is applied
Suppose a 10 N force is applied to the side of a 4.0 kg block that is sitting on a table. The block experiences a frictional force against the force that is
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Noel Weeks, “The Hermeneutical Problem of Genesis 1-11,” Themelios 4.1 (Sept. 1978): 12-19. have to be carefully established. Once again this lies outside the
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Worksheet 11 - Electronic Structure of Atoms The Schroedinger equation defines wave equations which describe the distribution of electrons around the nucleus
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coefficient of friction is the same as ... A hockey puck is hit on a frozen lake and starts moving ... coefficient of kinetic friction between puck and ice
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Understand different materials will have different coefficients of friction. Student ... Coefficient of Static Friction. Kinetic Friction. Coefficient of Kinetic Friction. Work, Force, Friction, Howard/Ingraham, 9/17/07, SEP 0508 www.clarkson.edu/k12
Part B Read each scenario. Decide whether a physical or chemical change has occurred and give evidence for your decision. The first one has been done for you to use
Part B Read each scenario. Decide whether a physical or chemical change has occurred and give evidence for your decision. The first one has been done for you to use
Download The paper will explore the conceptual underpinnings of constructivism as a learning theory in connection with PBL as an approach to teaching. Terms such as “student-centred learning” and teaching methods such as “group-work” are common
SPH4C – Friction 1. A block is ... The coefficient of static friction between a 10 kg object and the floor is 0.50. ... A hockey puck has a coefficient of kinetic
SP211 Worksheet 11: 6.1 Static and Kinetic Friction For kinetic friction problems: • f~k always points in the opposite direction of the relative motion between the object and the surface. For example, if a block is sliding across the floor, kinetic friction points in the opposite direction from the slide. • the magnitude of the force due to kinetic friction is |f~k | = µk |F~N |.
Problem 1 A block slides down a 27◦ incline. It is observed to be speeding up as it slides. The coefficient of kinetic friction between the block and the incline is µk = 0.14. a)What is the magnitude of the normal force experienced by the block? b) What is the magnitude of the block’s acceleration?
Problem 2 A cord pulls an 8.0 kg block across a horizontal floor at constant velocity. The cord makes an angle of 34◦ above the horizontal. The coefficient of kinetic friction between the block and the coord is µk = 0.21. What is the tension in the cord? HINT: If the block is moving with constant velocity, what is its acceleration?
SP211 Worksheet 11: 6.1 Static and Kinetic Friction For static friction problems: • f~s points parallel with the surface in whichever direction it has to so that the relative motion between the object and surface is zero. • the magnitude of the force due to statice friction has a maximum value given by|f~s,max | = µs |F~N |. In other words |f~s | ≤ µs |F~N |.
Problem 3 You are trying to drag a large box of mass m along the ground by a cord, but the box is not moving yet. The tension in the cord is FT and it makes an angle of θ above horizontal. The coefficient of static friction between the box and the ground is µs . a) Develop an expression for |f~s | in terms of FT , θ, m, and g. HINT: If there was no friction, in which direction would the box want to start accelerating? Your force due to static friction should point in the direction that can cancel out any unbalanced horizontal forces. b) Using your expression from above, assume that the force due to static friction is “maxed out,” such that if you were to pull any harder the box would start moving. Develop and expression for the mass of the box in terms of FT , θ, µs , and g. HEADS UP: This will help you greatly for problem 6.21 in the homework which asks for the maximum mass you could pull. In the homework you can take the expression for mass as a function of θ found here, and use differential calculus to find what value of θ gives the largest m.
