RRodBlockBulletProblem 7: The puck in the figure above on the left has a mass of 0.120 kg. The distance of the puckfrom the center of rotation is originally 0.4 m, and the puck is sliding with a speed of v; = 0.8 m/sec. Thestring is pulled downward through the hole in the frictionless table and the new distance of the puck fromthe center of rotation is 0.25 m. What is the new speed of the puck? Answer: vf = 1.28 m/secProblem 8: In the figure above on the right a 0.001 kg bullet with initial speed vi = 1800 m/sec is firedinto a 0.5 kg block attached to the end of a 0.60 m rod of mass 0.50 kg. Point A is the pivot point for therod and the bullet stays inside the block after the collision. What is the angular speed w of the system afterthe collision? The moment of inertia of the rod about point A is I = Me and the moment of a particleis I = mr?. Treat the block as a particle and also treat the bullet as a particle. Answer: w = 4.5 rad/sec

Mass of the puck, m = 0.120 kg Distance initially from centre of rotation, r1 = 0.4 m Linear initial…

Problem 7: The puck in the figure above on the left has a mass of 0.120 kg. The distance of the puck from the center of rotation is originally 0.4 m, and the puck is sliding with a speed of v, = 0.8 m/sec. The string is pulled downward through the hole in the frictionless table and the new distance of the puck from the center of rotation is 0.25 m. What is the new speed of the puck? Answer: v = 1.28 m/sec

Problem 7: The puck in the figure above on the left has a mass of 0.120 kg. The distance of the puck from the center of rotation is originally 0.4 m, and the puck is sliding with a speed of v, = 0.8 m/sec. The string is pulled downward through the hole in the frictionless table and the new distance of the puck from the center of rotation is 0.25 m. What is the new speed of the puck? Answer: v = 1.28 m/sec

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

See similar textbooks

Related questions

Q: At the local skateboard park, a 50.0 kg skateboarder "drops" into a bowl. The bowl is 1.90 m deep,…

A: f = friction force From energy conservation initial total potential energy = work done by friction +…

Q: A force of 2 pounds is required to hold a spring 2.4 inches beyond its natural length. How much work…

A: Given: force applied, F = 2 pound displacement, S = 2 inch

Q: A skier starts at the top of a 26.6-meter hill. Assuming there is no friction and no air resistance,…

Q: A mother pushes her child on a swing so that his speed is 9.1 m/s at the lowest point of his path.…

Q: The spring connects two objects. In this case, it's the object that moves and accelerates, and the…

Q: In Figure (a), you pull upward on a rope that is attached to a cylinder on a vertical rod. Because…

A: Given work done on system = W = + 100 J increase in kinetic energy = ∆k = 50 J increase in…

Q: A 2.0 g bead slides along a frictionless wire, as shown in the figure. At point A, the bead is at…

A: Given data hA=100 cm=1 mhC=80 cm=0.8 muA=0 m/s Potential energy at height is U=mgh Kinetic energy…

Q: Understand what is physically happening with the spring -- the ideal version, and differences from…

A: When a spring is stretched or pulled a force is exerted by the spring which is proportional to the…

Q: (a) Consider a box that is subjected to a constant net force F. The constant net force includes the…

A: a kinematic equation is vf2-vi2 = 2a∆x ∆x= vf2-vi22a work done is…

Q: Problem # 2: Assume that the transport airplane as illustrated in Figure below has just touchdown…

A: Introduction: Following points are important to consider: For body to be in rotational…

Q: Part A Determine the speed of the disk at the instant r= 1.2 m. The disk slides on the smooth…

Q: A 25.00 kg child swings on a single-rope swing at a local park (see image). The swing consists of a…

Q: Problem 2: To reduce the power requirements on elevator motors, elevators are counterbalanced with…

A: according to the question, mass of elevator is 600kg mass of the counterbalance, m2 = 450kg m1 =…

Q: When a 1984 Alfa Romeo Spider sports car accelerates at the maximum possible rate, its motion during…

Q: A rock with a mass of 1.0 kg is at the top of a hill and has a potential energy of 50 J. How high…

A: Given: m = 1 kg P.E = 50 J

Q: olve the chosen problem. Express your answer with the appropriate units. µA ? m v = 31.18 S Submit…

A: In order to solve this question. We will write total force Along the motion. And some basic…

Q: A point mass m is hanging from a massless spring attached at one end at a point O. The mass can…

Q: A 40 m long chain hangs freely from a ledge. Suppose the chain has a total mass of 800 kg. How much…

Q: A particle can slide along a track with elevated ends and a flat central part, as shown in the…

Q: Part D Evaluate the final kinetic energy of the supply spacecraft if the tractor beam force had been…

A: Given that the tractor beam force is constant and equal to Fo, the kinetic energy (KE2) of the…

Q: if k = 29 N/cm, ℓ = 9 cm, and x = 12 cm, calculate the force (in Newtons) on the object, including…

A: The force exerted by the spring on the object is proportional to the displacement (compression or…

Q: A penny is dropped from the Statue of Liberty. The Statue of Liberty is 93 m tall. If a penny has…

A: The objective of the question is to find out the kinetic energy of the penny when it is at the…

Q: A satellite has a mass of 462 kg and is located at 2.05 x 106 m above the surface of Earth. (a) What…

A: Given: Mass of satellite ms= 462 kg Located at height above the ground h=2.05x106…

Concept explainers

Rigid Body

A rigid body is an object which does not change its shape or undergo any significant deformation due to an external force or movement. Mathematically speaking, the distance between any two points inside the body doesn't change in any situation.

Rigid Body Dynamics

Rigid bodies are defined as inelastic shapes with negligible deformation, giving them an unchanging center of mass. It is also generally assumed that the mass of a rigid body is uniformly distributed. This property of rigid bodies comes in handy when we deal with concepts like momentum, angular momentum, force and torque. The study of these properties – viz., force, torque, momentum, and angular momentum – of a rigid body, is collectively known as rigid body dynamics (RBD).

Question

100%

R
Rod
Block
Bullet
Problem 7: The puck in the figure above on the left has a mass of 0.120 kg. The distance of the puck
from the center of rotation is originally 0.4 m, and the puck is sliding with a speed of v; = 0.8 m/sec. The
string is pulled downward through the hole in the frictionless table and the new distance of the puck from
the center of rotation is 0.25 m. What is the new speed of the puck? Answer: vf = 1.28 m/sec
Problem 8: In the figure above on the right a 0.001 kg bullet with initial speed vi = 1800 m/sec is fired
into a 0.5 kg block attached to the end of a 0.60 m rod of mass 0.50 kg. Point A is the pivot point for the
rod and the bullet stays inside the block after the collision. What is the angular speed w of the system after
the collision? The moment of inertia of the rod about point A is I = Me and the moment of a particle
is I = mr?. Treat the block as a particle and also treat the bullet as a particle. Answer: w = 4.5 rad/sec

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

We are given a puck rotating in circle :-

VIEW

We will apply Law of conservation of Angular Momentum here :-

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 2 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.

Similar questions

A smooth block is set at the top of a smooth track. There is no friction between the block and track. We would like the block to make its way through the entire track, and so it must stay on the track as it goes through the circular loop section. The block starts at rest, and the Radius of curvature for the loop is 10 meters. Use g = 9.8 m/s?. What is the minimum starting height H for the block if it is to make it through the loop while still staying on the track? Hint: At the top of the loop the Normal force will be zero in this situation. This is because we want a starting height that will give us just enough speed at the top of the loop to follow the circular path, no more, no less. H=? R
An average froghopper insect has a mass of 11.3 mg and jumps to a maximum height of 308 mm when its takeoff angle is 58.0∘ above the horizontal. Find the takeoff speed of the froghopper. Takeoff speed: How much kinetic energy did the froghopper generate for this jump? Express your answer in microjoules. kinetic energy: How much energy per unit of body mass was required for the jump? Express your answer in joules per kilogram of body mass. energy per unit body mass:
A-C please!
4. The power provided by a force can also be written as P = dW /dt = F · d7/dt = F .ö. A force F = (3i – 2j + 6k)N is applied to an object moving with a velocity i = (2î – 3k) m/s. a. What is the power provided by this force? Does the object speed up or slow down or neither, if this force is the only unbalanced force acting on the object? b. Consider a force that is always perpendicular to the velocity. Does the object speed up or slow down or neither, if this force is the only unbalanced force acting on the object?
Computation. A block is released from rest at the top of a 47-m long frictionless ramp inclined at 34° above the horizontal. What is the block's speed at the bottom of the ramp? v= m/s Record your numerical answer below, assuming three significant figures. Remember to include a "-" if/when necessary.
Three different objects, all with different masses, are initially at rest at the bottom of a set of steps. Each step is of uniform height d. The mass of each object is a multiple of the base mass m: object 1 has mass 4.90m, object 2 has mass 1.46m, and object 3 has mass m. When the objects are at the bottom of the steps, define the total gravitational potential energy of the three-object system to be zero. Each answer requires the numerical coefficient to an algebraic expression that uses some combination of the variables m, g, and d, where g is the acceleration due to gravity. Enter only the numerical coefficient. (Example: If the answer is 1.23mgd, just enter 1.23) If the objects are positioned on the steps as shown, what is gravitational potential energy Ug.system of the system? If you redefine the reference height such that the total potential energy of the system is zero, how high ho above the bottom of the stairs is the new reference height? Now, find a new reference height h…
PLEASE HELP WITH THOROUGH STEPS
Four identical masses of 7.3 grams are placed at the corners of a square with a side length of d = 27 cm, as shown below. What is the gravitational potential energy of the system? d d
A single frictionless roller-coaster car of mass m = 750 kg tops the first hill with speed v= 15 m/s at height h = 40 m as shown. Find the speed of the car at B and C.
4. An object of mass m makes a loop-the-loop as shown. When it is upside down at point A, the normal force is found to be 2mg. a) What is the speed of the object at point A in terms of g and R? b) What is the normal force at point B, neglecting any friction of air resistance? Put your answer in terms of m and g. A B
Three different objects, all with different masses, are initially at rest at the bottom of a set of steps. Each step is of uniform height d. The mass of each object is a multiple of the base mass m: object 1 has mass 4.60m, object 2 has mass 2.21m, and object 3 has mass m. When the objects are at the bottom of the steps, define the total gravitational potential energy of the three-object system to be zero. If the objects are then relocated as shown, what is the new total potential energy of the system? Each answer requires the numerical coefficient to an algebraic expression. Each algebraic expression is given using some combination of the variables m, g, and d, where g is the acceleration due to gravity. Enter only the numerical coefficient. (Example: If the answer is 1.23mgd, just enter 1.23) This potential energy was calculated relative to the bottom of the stairs. If you were to redefine the reference height such that the total potential energy of the system became zero, how high…
Taylore has a couch that she wants to move in Davidson Student Center's lounge, with mass 12.7 kg. The couch starts at rest. Taylore pushes with an 24.4 N force, and the object has a displacement of 11.2 m, directed 30.0° from the direction of the force. What is the final speed of the couch? Your Answer: Answer