please help me. I cannot find the answer for b) and c) A box having a mass of 4 kg moves up to point B with an initial velocity 7m/s at point A on an inclined plane of height 2 m.7 m/s2 m300FIGURE 2The box passes point B with velocity of 2 m/s. Determinethe work done by friction force.11.6Ja.b.the frictional force acting on the box.2.9 NC.the coefficient of the kinetic friction between the plane and thebox.0.085

According to conservation of energy Total energy of isolated system remains constant. Initial…

Answered: A box having a mass of 4 kg moves up to…

A box having a mass of 4 kg moves up to point B with an initial velocity 7 m/s at point A on an inclined plane of height 2 m. 7 m/s ; 2 m 300 FIGURE 2

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 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?
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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