Two blocks of mass mA and mB , resting on a frictionless table, are connected by a stretched spring and then released (Fig. 7–48). (a) Is there a net external force on the system before release? (b) Determine the ratio of their speeds, vA/vB . (c) What is the ratio of their kinetic energies? (d) Describe the motion of the CM of this system. Ignore mass of spring. Two blocks of mass ma and mB, resting on a frictionlesstable, are connected by a stretched spring and then released(Fig. 7-48). (a) Is there a net external force on the systembefore release? (b) Determine the ratio of their speeds, vA/VB .(c) What is the ratio of their kinetic energies? (d) Describethe motion of the CM of this system. Ignore mass of spring.VBmBFIGURE 7-48 Problem 83.

Since you have posted a question with a multiple sub parts, we will solve first three sub - parts…

Two blocks of mass ma and mg, resting on a frictionless table, are connected by a stretched spring and then released (Fig. 7–48). (a) Is there a net external force on the system before release? (b) Determine the ratio of their speeds, va/VB - (c) What is the ratio of their kinetic energies? (d) Describe the motion of the CM of this system. Ignore mass of spring. VB mB mA

Two blocks of mass ma and mg, resting on a frictionless table, are connected by a stretched spring and then released (Fig. 7–48). (a) Is there a net external force on the system before release? (b) Determine the ratio of their speeds, va/VB - (c) What is the ratio of their kinetic energies? (d) Describe the motion of the CM of this system. Ignore mass of spring. VB mB mA

University Physics Volume 1

18th Edition

ISBN:9781938168277

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

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

Chapter9: Linear Momentum And Collisions

Section: Chapter Questions

Problem 99AP: Repeat the preceding problem for the case when the initial speed of the second object is nonzero.

See similar textbooks

Similar questions

Repeat the preceding problem for the case when the initial speed of the second object is nonzero.
A ball of mass 0.300 kg is thrown upward, rising 10.0 m above the point at which it was released. Compute the average force exerted on the ball by the hand, if the hand moves through a distance of 20.0 cm as the ball is accelerated.
A block of mass m and speed v collides with a spring,compressing it a distance ∆x. What is the compression of thespring if the force constant of the spring is increased by a factorof four?
Gayle runs at a speed of 4.00 m/s and dives on a sled, initiallyat rest on the top of a frictionless, snow- covered hill. After shehas descended a vertical distance of 5.00 m, her brother, whois initially at rest, hops on her back, and they continue downthe hill together. What is their speed at the bottom of the hillif the total vertical drop is 15.0 m? Gayle’s mass is 50.0 kg,the sled has a mass of 5.00 kg, and her brother has a mass of30.0 kg.
when the velocity of a body is doubled, its kinetic energy is also doubled. true or false?
a baseball catcher puts on an exhibition by catching a 0.15 kg ball, dropped from a helicopter at a height of 100m above the catcher. If the catcher "gives" with the ball for 0.75 m (was originally 1m off the ground) while catching it, what is the average force exerted on the mitt by the ball?
A roaller-coaster cart initially moves with a speed of 8.92 m/s up an incline, without friction. If the mass of the cart is 55.6 kg If the cart coasts up the incline, after what distance will it come to a stop?
a 1.75-kg block at rest on a ramp of height h.When the block is released, it slides without friction to the bottomof the ramp, and then continues across a surface that is frictionlessexcept for a rough patch of width 10.0 cm that has a coefficientof kinetic friction mk = 0.640. Find h such that the block’s speedafter crossing the rough patch is 3.50 m>s.
A projectile of mass m is fired horizontally with an initialspeed of v0 from a height of h above a flat, desert surface.Neglecting air friction, at the instant before the projectile hitsthe ground, find the following in terms of m, v0, h, and g : (a) thework done by the force of gravity on the projectile, (b) thechange in kinetic energy of the projectile since it was fired,and (c) the final kinetic energy of the projectile. (d) Are anyof the answers changed if the initial angle is changed?
Gayle runs at a speed of 3.30 m/s and dives on a sled, initially at rest on the top of a frictionless snow-covered hill. After she has descended a vertical distance of 5.00 m, her brother, who is initially at rest, hops on her back and together they continue down the hill. What is their speed at the bottom of the hill if the total vertical drop is 15.0 m? Gayle's mass is 48.0 kg, the sled has a mass of 5.25 kg and her brother has a mass of 30.0 kg.
The 20-lb block has a speed of 8 ft/s when the force of F = (16t^3) lb is applied. Determine the velocity of the block when t = 2.45sec. The coefficient of kinetic friction at the surface is μk = 0.2.
In the design of a spring cannon,determine the elastic spring constant, with two decimal places, required to launch a ball of 1.7 kg with an initial velocity of 9.3 m/s, from an initial position in which the spring is offset of 28cm in relation to the equilibrium point