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Q16. A constant force of (12hat i N acts on a 4.0-kg object as it moves from the origin to the point   (6hat i -8 hat j )m. How much work is done   by the given force during this displacement?

Q16. A constant force of (12hat i N acts on a 4.0-kg object as it moves from the origin to the point   (6hat i -8 hat j )m. How much work is done   by the given force during this displacement?

University Physics Volume 1
University Physics Volume 1
18th Edition
ISBN:9781938168277
Author:William Moebs, Samuel J. Ling, Jeff Sanny
Publisher:William Moebs, Samuel J. Ling, Jeff Sanny
Chapter8: Potential Energy And Conservation Of Energy
Section: Chapter Questions
Problem 70AP: A particle of mass 2.0 kg moves under the influence of the force F(x)=(5x2=7x)N . Suppose a...
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Q16. A constant force of (12hat i N acts on a 4.0-kg object as it moves from the origin to the point

 

(6hat i -8 hat j )m. How much work is done

 

by the given force during this displacement?

a) 12 cm b) 16 cm d) 24 cm e) 28 cm Q14: A 2 kg mass is projected down a rough circular track (R-2 m) as shown. m/s, and at point B, it is 6 m/s. The speed of the mass at point A is 4 How much work is done on the mass between A and B by the force of friction? a)-19.2 d) -14.2 b) -41.2 e) -91.2 c) 20 c) Zero Q15: A 0.5 kg block slides along a horizontal frictionless surface at 2.5m/s. It is brought to rest by compressing a spring of spring constant 100N/m. The maximum spring compression (in cm) is: a) 12.33 b) 28.28 c) 15.6 d) 17.67 oooooooo b)-8m/s² Before (unstretched spring) 20m After (compressed spring) 00000000 016: A constant force of (121) N acts on a 4.0-kg object as it moves from the origin to the point (61-81) m. How much work is done by the given force during this displacement? a) 60 J b) 72 J c) 84 J d) 48 J 017: The potential energy of a 0.20-kg particle moving along the x axis is given by U(x) = (8x2-2x4). When the particle is at x = 1m its acceleration is: a) 40m/s² c) -40m/s² d) 8m/s²
Transcribed Image Text:a) 12 cm b) 16 cm d) 24 cm e) 28 cm Q14: A 2 kg mass is projected down a rough circular track (R-2 m) as shown. m/s, and at point B, it is 6 m/s. The speed of the mass at point A is 4 How much work is done on the mass between A and B by the force of friction? a)-19.2 d) -14.2 b) -41.2 e) -91.2 c) 20 c) Zero Q15: A 0.5 kg block slides along a horizontal frictionless surface at 2.5m/s. It is brought to rest by compressing a spring of spring constant 100N/m. The maximum spring compression (in cm) is: a) 12.33 b) 28.28 c) 15.6 d) 17.67 oooooooo b)-8m/s² Before (unstretched spring) 20m After (compressed spring) 00000000 016: A constant force of (121) N acts on a 4.0-kg object as it moves from the origin to the point (61-81) m. How much work is done by the given force during this displacement? a) 60 J b) 72 J c) 84 J d) 48 J 017: The potential energy of a 0.20-kg particle moving along the x axis is given by U(x) = (8x2-2x4). When the particle is at x = 1m its acceleration is: a) 40m/s² c) -40m/s² d) 8m/s²
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