help with questions 9,10 and 11 9. A constant horizontal force of 20.0 newtons eastapplied to a box causes it to move at a constantspeed of 4.0 meters per second. Calculate howmuch work is done against friction on the box in6.0 seconds.10. A horizontal force with a magnitude of 3.0newtons applied to a 7.0-kilogram mass movesthe mass horizontally a distance of 2.0 meters.Determine the work done against gravity inmoving the mass.11.student pulls a block along a horizontal sur-face at constant velocity. The diagram belowshows the components of the force exerted onthe block by the student.StringBlock8.0 NHorizontalsurface3.0 mCalculate the work done against friction.6.0 N

Work done by force F is given by W=F.dr ,where r is the distance travelled by the object .

9. A constant horizontal force of 20.0 newtons east applied to a box causes it to move at a constant speed of 4.0 meters per second. Calculate how much work is done against friction on the box in 6.0 seconds.

9. A constant horizontal force of 20.0 newtons east applied to a box causes it to move at a constant speed of 4.0 meters per second. Calculate how much work is done against friction on the box in 6.0 seconds.

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 61PE: Integrated Concepts A 75.0-kg cross-country skier is climbing a 3.0° slope at a constant speed of...

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Question

help with questions 9,10 and 11

9. A constant horizontal force of 20.0 newtons east
applied to a box causes it to move at a constant
speed of 4.0 meters per second. Calculate how
much work is done against friction on the box in
6.0 seconds.
10. A horizontal force with a magnitude of 3.0
newtons applied to a 7.0-kilogram mass moves
the mass horizontally a distance of 2.0 meters.
Determine the work done against gravity in
moving the mass.
11.
student pulls a block along a horizontal sur-
face at constant velocity. The diagram below
shows the components of the force exerted on
the block by the student.
String
Block
8.0 N
Horizontal
surface
3.0 m
Calculate the work done against friction.
6.0 N

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