4) A block of mass 6.0 kg is pushed a distance of 5.00 m along a 30.0° rough inclined plane with an applied force along the incline of 50.0 N. The force of friction between the block and the surface is f 17.8 N. a. b. C. State the energy principle for the system that contains only the block (i.e., all forces are external to the system), assuming the block starts from rest and ends moving with some final velocity, v. Don't put in any numbers, but do indicate if any of the terms are zero (put a line through them). Find We, the work done by the 50.0 N applied force over the 5.00 m. 5.00 m 30° Find the energy lost by friction over the 5.00 m. Use the energy principle to determine the final speed of the block, v.

4) A block of mass 6.0 kg is pushed a distance of 5.00 m along a 30.0° rough inclined plane with an applied force along the incline of 50.0 N. The force of friction between the block and the surface is f 17.8 N. a. b. C. State the energy principle for the system that contains only the block (i.e., all forces are external to the system), assuming the block starts from rest and ends moving with some final velocity, v. Don't put in any numbers, but do indicate if any of the terms are zero (put a line through them). Find We, the work done by the 50.0 N applied force over the 5.00 m. 5.00 m 30° Find the energy lost by friction over the 5.00 m. Use the energy principle to determine the final speed of the block, v.

Name: 4) A block of mass 6.0 kg is pushed a distance of 5.00 m along a30.0°
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Description: 4) A block of mass 6.0 kg is pushed a distance of 5.00 m along a30.0° rough inclined plane with an applied force along the inclineof 50.0 N. The force of friction between the block and the surfaceis f. 17.8 N.a.b.C.d.State the energy principle for t

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter7: Work, Energy, And Energy Resources

Section: Chapter Questions

Problem 7PE: A shopper pushes a grocery cart 20.0 m at constant speed on level ground, against a 35.0 N...

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(a) How long will it take an 850-kg car with a useful power output of 40.0 hp (1hp=746W) to reach a speed of 15.0 m/s, neglecting friction? (b) How long will this acceleration take if the car also climbs a 3.00-m-high hill in the process?
A tension force of 175 N inclined at 20.0 above the horizontal is used to pull a 40.0-kg packing crate a distance of 6.00 m on a rough surface. If the crate moves at a constant speed, find (a) the work done by the tension force and (b) the coefficient of kinetic friction between the crate and surface.
a shopper in a supermarket pushes a cart with a force of 35 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 50.0-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 doesnt change, would the shoppers applied force be larger, smaller, or the same? What about the work done on the cart by the shopper?
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