A shopper in a supermarket pushes a cart with a force of 27 N directed at an angle of 25° below the horizontal. The force is just sufficient to overcome variousfrictional forces, so the cart moves at constant speed.(a) Find the work done by the shopper as she moves down a 35.0-m length aisle.J(b) What is the net work done on the cart?JWhy?(c) The shopper goes down the next aisle, pushing horizontally and maintaining the same speed as before. If the work done by frictional forcesdoesn't change, would the shopper's applied force be larger, smaller, or the same? What about the work done on the cart by the shopper?

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A shopper in a supermarket pushes a cart with a force of 27 N directed at an angle of 25° below the horizontal. The force is just sufficient to overcome variou frictional forces, so the cart moves at constant speed. (a) Find the work done by the shopper as she moves down a 35.0-m length aisle. (b) What is the net work done on the cart? Why? (c) The shopper goes down the next aisle, pushing horizontally and maintaining the same speed as before. If the work done by frictional forces doesn't change, would the shopper's applied force be larger, smaller, or the same? What about the work done on the cart by the shopper?

A shopper in a supermarket pushes a cart with a force of 27 N directed at an angle of 25° below the horizontal. The force is just sufficient to overcome variou frictional forces, so the cart moves at constant speed. (a) Find the work done by the shopper as she moves down a 35.0-m length aisle. (b) What is the net work done on the cart? Why? (c) The shopper goes down the next aisle, pushing horizontally and maintaining the same speed as before. If the work done by frictional forces doesn't change, would the shopper's applied force be larger, smaller, or the same? What about the work done on the cart by the shopper?

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)...

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A shopper in a supermarket pushes a cart with a force of 27 N directed at an angle of 25° below the horizontal. The force is just sufficient to overcome various
frictional forces, so the cart moves at constant speed.
(a) Find the work done by the shopper as she moves down a 35.0-m length aisle.
J
(b) What is the net work done on the cart?
J
Why?
(c) The shopper goes down the next aisle, pushing horizontally and maintaining the same speed as before. If the work done by frictional forces
doesn't change, would the shopper's applied force be larger, smaller, or the same? What about the work done on the cart by the shopper?

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