N7. An elevator of mass 890 kg has an upward force of 1.10 x 10ªN applied to it.Determine the following:a) the net force on the elevator.b) the acceleration of the elevator.(ANS: a) 2.23 x 10³ N b) 2.56 m/s²)18. In a competition, a small robot accelerates forward at 0.25 m/s² as it pushes a wood a = 0.25 m/s² block ofmass 1.6 kg towards a basket. A friction force of 3.7 N exists between the block and floor.a) What is the net force acting on the block?b) What force is the robot applying to accelerate the block?(ANS: a) 0.4 N b) 4.1 N)a = 0.25 m/s?0009. A hoist is used to lift a 780 kg car upward with an acceleration of 0.110 m/s².a) What is the net force acting on the car?b) What force was used to lift the car?(ANS: a) 86 N b) 7.73 x 10³ N)a 0.11 m/sWigh se

7 -- Given: Mass of elevator, m=890 kg Upward force , F=1.10×104 N To determine: (a) net force…

N7. An elevator of mass 890 kg has an upward force of 1.10 x 10N applied to it. Determine the following: a) the net force on the elevator. b) the acceleration of the elevator. (ANS: a) 2.23 x 103 N b) 2.56 m/s²) 8. In a comnetition

N7. An elevator of mass 890 kg has an upward force of 1.10 x 10N applied to it. Determine the following: a) the net force on the elevator. b) the acceleration of the elevator. (ANS: a) 2.23 x 103 N b) 2.56 m/s²) 8. In a comnetition

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter8: Conservation Of Energy

Section: Chapter Questions

Problem 84PQ

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Question

N7. An elevator of mass 890 kg has an upward force of 1.10 x 10ªN applied to it.
Determine the following:
a) the net force on the elevator.
b) the acceleration of the elevator.
(ANS: a) 2.23 x 10³ N b) 2.56 m/s²)
18. In a competition, a small robot accelerates forward at 0.25 m/s² as it pushes a wood a = 0.25 m/s² block of
mass 1.6 kg towards a basket. A friction force of 3.7 N exists between the block and floor.
a) What is the net force acting on the block?
b) What force is the robot applying to accelerate the block?
(ANS: a) 0.4 N b) 4.1 N)
a = 0.25 m/s?
000
9. A hoist is used to lift a 780 kg car upward with an acceleration of 0.110 m/s².
a) What is the net force acting on the car?
b) What force was used to lift the car?
(ANS: a) 86 N b) 7.73 x 10³ N)
a 0.11 m/s
Wigh se

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