25. A war-wolf or trebuchet is a device used during the Mid- dle Ages to throw rocks at castles and now sometimes used to fling large vegetables and pianos as a sport. A sim- ple trebuchet is shown in Figure P10.25. Model it as a stiff rod of negligible mass, 3.00 m long, joining particles of mass 60.0 kg and 0.120 kg at its ends. It can turn on a fric- tionless, horizontal axle perpendicular to the rod and 14.0 cm from the large-mass particle. The rod is reteased from rest in a horizontal orientation. (a) Find the maxi- mum speed that the 0.120-kg object attains. (b) While the 9420-kg object is gaining speed, does it move with con- stant acceleration? Does it move with constant tangential acceleration? Does the trebuchet move with constant angular acceleration? Does it have constant momentum? Does the trebuchet-Earth system have constant mechani- cal energy?

25. A war-wolf or trebuchet is a device used during the Mid- dle Ages to throw rocks at castles and now sometimes used to fling large vegetables and pianos as a sport. A sim- ple trebuchet is shown in Figure P10.25. Model it as a stiff rod of negligible mass, 3.00 m long, joining particles of mass 60.0 kg and 0.120 kg at its ends. It can turn on a fric- tionless, horizontal axle perpendicular to the rod and 14.0 cm from the large-mass particle. The rod is reteased from rest in a horizontal orientation. (a) Find the maxi- mum speed that the 0.120-kg object attains. (b) While the 9420-kg object is gaining speed, does it move with con- stant acceleration? Does it move with constant tangential acceleration? Does the trebuchet move with constant angular acceleration? Does it have constant momentum? Does the trebuchet-Earth system have constant mechani- cal energy?

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter11: Angular Momentum

Section: Chapter Questions

Problem 59P: A bug of mass 0.020 kg is at rest on the edge of a solid cylindrical disk (M=0.10kg,R=0.10m)...

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