💬 👋 We’re always here. Join our Discord to connect with other students 24/7, any time, night or day.Join Here!

Like

Report

Get the answer to your homework problem.

Try Numerade Free for 7 Days

In Example 8.14 (Section $8.5 ),$ Ramon pulls on the rope to give himself a speed of 0.70 $\mathrm{m} / \mathrm{s}$ . What is James's speed?

$v_{J}=0.47\mathrm{m/s}$

Physics 101 Mechanics

Chapter 8

Momentum, Impulse, and Collisions

Moment, Impulse, and Collisions

Cornell University

Rutgers, The State University of New Jersey

Simon Fraser University

Lectures

04:16

In mathematics, a proof is…

04:48

In mathematics, algebra is…

04:44

In Example 8.14 (Section 8…

02:27

A boat is pulled into a do…

04:29

Weighty Rope. If in Exampl…

07:10

(a) For the elevator of Ex…

02:52

A boat is being pulled tow…

02:36

A hang glider moving at sp…

02:01

A tetherball on a 1.7 -m r…

02:12

An 85 kg man lowers himsel…

06:59

Imagine that Usain Bolt ca…

04:53

Velocity A pulley is on th…

in this question to friends. James and Ramon are playing tug of war. Ramon has a mass off 60 kg and James has a mass off 90 kg. At some point in time, Ramon suddenly pulls the rope and achieves a speed off 0.7 m per second to the left. By the principle of conservation of momentum, we expect that James will also move with some speed to the right. In this question, we have to calculate what is the speed that James achieve. For that, we're going to use the principle of conservation of momentum. That principle tells us that the net momentum is conserved in any kind of situation where no external forces are acting on our system, which is just our case. So applying the principle of conservation of momentum, we have the following the momentum before the pool is equal to the momentum. After the pool. Let me use these reference frame where everything that points the right is positive. Then in this reference frame, we have the following. Before there was no one moving, so the net momentum before is equals to zero after the pool, both off them are moving James with a mass off 90 kg is moving to the right the positive direction off a reference frame with velocity V. At the same time, Ramon, with a mass off 60 kg, is moving to the left with a velocity off 0.7 m per second. It has a negative sign because it points to the negative direction off our reference frame. Now all we have to do is solve this equation for V. We do that as follows. We begin by sending this term toe the left hand side. So we have 60 times 0.7 is equal to 19 times V. Then we send 90 to the other side dividing. So we have V is equals to 60 times 0.7, divided by 90 by Soviets calculation. We get a velocity off approximately 0.47 m per second to the right and this is the answer to this question.

Numerade Educator

In mathematics, a proof is a sequence of statements given to explain how a c…

In mathematics, algebra is one of the broad parts of mathematics, together w…

In Example 8.14 (Section 8.5), Ramon pulls on the rope to give himself a spe…

A boat is pulled into a dock by a rope attached to the bowof the boat an…

Weighty Rope. If in Example 15.3 (Section 15.4$)$ we do not neglect the weig…

(a) For the elevator of Example 7.9 (Section 7.2), what is the speed of the …

A boat is being pulled toward a dock by a rope attached to its bow through a…

A hang glider moving at speed $9.5 \mathrm{m} / \mathrm{s}$ dives to an alti…

A tetherball on a 1.7 -m rope is struck so that it goes into circular motion…

An 85 kg man lowers himself to the ground from a height of 10.0 $\mathrm{m}$…

Imagine that Usain Bolt can reach his maximum speed in 1.7 s. What should be…

Velocity A pulley is on the edge of a dock, 8 ft above the water level. (See…