A car of mass 1,750 kg travels along a circular road of radius 85.0 m at 20.0 m/s. (a) Calculate the magnitude of the car's centripetal acceleration. |m/s? (b) What is the magnitude of the force of static friction acting on the car? N

A car of mass 1,750 kg travels along a circular road of radius 85.0 m at 20.0 m/s. (a) Calculate the magnitude of the car's centripetal acceleration. |m/s? (b) What is the magnitude of the force of static friction acting on the car? N

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

See similar textbooks

Similar questions

2) A disk (40mm diameter and 0.2 kg mass) is dropped in the air. Consider g = 10 m/s² and the density of air 1.2 kg/m³. Assume that the drag coefficient of the disk is 1.17. At t=0, the disk speed V = 0. a) What is the acceleration and distance when the ball speed reaches to 1/4V₁, where V, is the terminal speed? b) What would be the answer for part (a) if the falling object is hemispherical (40mm diameter and 0.2 kg mass)? Explain
Suppose a car rounds a curve at a constant speed of 13 m/s. The curve is a circular arc with a radius of 100 m. Ignore air friction initially. (a) What is the magnitude and direction of the horizontal force that the road must exert on the car to keep it moving along the curve? Express this magnitude as a fraction of the car’s weight. The magnitude of the horizontal force is _______∣F→g∣|. The direction is (Choose one) Horizontal and parallel to the direction the car turns to Vertical and perpendicular to the direction the car turns to vertical and parallel to the direction the car turns to horizontal and perpendicular to the direction the car turns to (b) Now suppose that air friction is not zero, but is about half the result that you calculated for part (a). Must the force that the road exerts on the car increase in magnitude compared to the no-drag case? (Choose )Yes or No Must it change its direction? (Choose) Yes Or No
A car travels around a horizontal bend of radius 110 m at a constant speed. If the coefficient of the static friction between the road and car tyres is us = 7.4, What is the magnitude of car's acceleration (m/s²) when the car is negotiating ?the bend at the maximum allowed speed
A crate of eggs is located in the middle of the flat bed of a pickup truck as the truck negotiates a curve in the flat road. The curve may be regarded as an arc of a circle of radius 33.8 m. If the coefficient of static friction between crate and truck is 0.610, how fast can the truck be moving without the crate sliding? Vmax= m/s
2. (a) A distant planet has radius 3.6 x 106 m. A 6 kg cat weighs 22 N on the surface of this planet. Calculate the mass of the planet. (b) You push a 65 kg desk horizontally and it accelerates at 1.2 m/s2. If the coefficient of kinetic friction between the desk and floor is 0.38, calculate the magnitude of the force you apply to the desk.
Problem 5: A car negotiates an unbanked 85.2 m radius curve at 19.9 m/s. Calculate the minimum coeficient of friction needed to negotiate the curve. Hg = || sin() cotan() atan() cosh() cos() asin() acotan() tanh() O Degrees tan() ♫ acos() E sinh() cotanh() Radians 7 ^^^ 4 1 1 + 0 VO BACKSPACE * ∞02 - 8 9 5 63 DEL HOME END CLEAR
A small piece of Styrofoam packing material is dropped from a height of 2.50 m above the ground. Until it reaches terminal speed, the magnitude of its acceleration is given by a = g - Bv. After falling 0.400 m, the Styrofoam effectively reaches terminal speed, and then takes 5.10 s more to reach the ground. (a) What is the value of the constant B? s-1 (b) What is the acceleration at t = 0? m/s² (down) (c) What is the acceleration when the speed is 0.150 m/s? m/s² (down)
Two masses are connected to a string whose mass is zero. They are suspended from a pulley that connects two inclined planes. The mass ml is 8.0 kg, and the mass m2 is 12.0 kg. The kinetic coefficient of friction for the two inclined planes is 0.21. a) Determine the acceleration of the two masses. b) Determine the tension of the string. m 34 m₂
A high-speed railway car goes around a flat, horizontal circle of radius 450 m at a constant speed. The magnitudes of the horizontal and vertical components of the force of the car on a 55.0 kg passenger are 204 N and 539 N, respectively. (a) What is the magnitude of the net force (of all the forces) on the passenger? (b) What is the speed of the car? (a) Number i (b) Number Units Units
3:31 4 M M 令l docs.google.com/forms (2 O Option 3 O Option 4 A block of mass m -1 kg is found on an inclined plane that makes an angle 30° with the horizontal. The coefficient of static friction and coef- ficient of kinetic friction between the block and the incline are: H. = 0.6 and - 0.5. Take the positive di- rection to be up the inclined plane With the block initially at rest, the acceleration of the block is a = -9.33 a = 0.66 O Option 4 O Option 2 a = 0 a = -0,66 O Option 1 O Option 3 With the block initially moving up the inclined, the acceleration is: a = 0,66 a = -9.33 O Option 2 O Option 4 a = -0,66 a = 0
(a) Estimate the terminal speed of a wooden sphere (density 0.870 g/cm³) falling through air, if its radius is 8.00 cm and its drag coefficient is 0.500. (The density of air is 1.20 kg/m³.) m/s (b) From what height would a freely falling object reach this speed in the absence of air resistance? m
Determine the drag coefficient ca needed for a parachutist of mass m = 68.1 kg to have a velocity of 40 m/s after free-falling for time t = 10 s. Assume the acceleration due to gravity is 9.8 m/s². v(t) = [1 - e-G)] gm Cd