Question: Problem 3: Energy and work done by friction. A 25 kg child goes down a straight slide inclined 38 above the horizontal, which is

Problem 3: Energy and work done by friction. A 25 kg child

Problem 3: Energy and work done by friction. A 25 kg child goes down a straight slide inclined 38 above the horizontal, which is 2.5 m long. There is friction between the child and the slide, and the magnitude of the kinetic friction force on the child is 70 N. The child slides all the way down to the bottom of the slide. Consider the system consisting of the child and the Earth together. 38 A. Draw a free-body diagram for the child. Next to your diagram, indicate the direction of the child's displacement. B. Calculate the work done on the system by the friction force. C. Calculate the change in gravitational potential energy of the system. D. If the child starts at rest at the top of the slide, determine the speed of the child at the bottom of the slide.

Step by Step Solution

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock blur-text-image

Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock

Step: 3 Unlock

Students Have Also Explored These Related Physics Questions!

10. Pick has a required return of 13ook, and the stock sells for $37.00 per share. The firm just paid a dividend of $1.00, and the pected to grow by 40.00% per year for the next 4 years, so D,...

The following are several figures reported for Poyer and Sutter as of December 31, 2024: Items Inventory Sales Poyer $ 450,000 900,000 Sutter $ 250,000 700,000 Investment income Cost of goods sold...

2. Evaluate the following definite integrals (a) (2x - 6x) dx /6 (b) 16 cos 3t + 2 sin 3t dt x+1 2 da

Problem 4: A child of mass m = 24 kg slides down a slide of height h = 2.5 m without friction. Let gravitational potential energy be zero at ground level. Part (a) Write an expression for the child's...

1. A 10.5 kg sled starts from rest at the top of a hill that is inclined at 21.6 degrees to the horizontal. The sled travels along the incline for a distance of 15.8 m to the foot of the hill where...

Kolsawala (alk472) - 2-PHY317k-Homework - lang - (57345) is an avalanche, in which a large mass of snow 2. 1.215-44 and ice breaks loose and goes on an essentially 3. 1.36112 frictionless "ride" down...

You have a summer internship at a company that makes playground equipment. You have been asked to help design a slide that will be , : shaped in the form of the arc of a circle with a maximum height...

Problem 6 / Lecture 5 (Energy Conservation) A 70-kg diver steps off a 10-m tower and drops from rest straight down into the water. If he comes to rest 5.0 m beneath the surface, determine the average...

Please solve this tasks and explain with all details the solution, because I am preparing for the exam and there is a chance that I will have similiar tasks. Thank you in advance Quiz 3 Energy and...

4 . A child of mass m = 24 kg slides down a slide of height h = 2.5 m without friction. Let gravitational potential energy be zero at ground level. Part (a) tell an expression for the child's total...

Determine the half-cell reactions and the overall cell reaction, calculate the cell potential, and determine the equilibrium constant at 298 K for the following cell: Pt(s) | H2(g) | H* (aq, aH+ =...

(a) Model the following situation a graphs. Draw the graph, and give the corresponding adjacency matrix. (b) Alfred and Brenda are friends. Alfred is also friends with Catherine and Dylan. Brenda,...

Employers are generally considered liable for the actions and omissions of employees as performed and committed within the scope of their employment. This is known as

Water flows through a shower head steadily at a rate of 8 kg/min. The water is heated in an electric water heater from 15C to 45C. In an attempt to conserve energy, it is proposed to pass the drained...

The compound pendulum is composed of a uniform slender rod of length l and mass 2m to which is fastened a uniform disk of diameter l/2 and mass m. The body pivots freely about a horizontal axis...

Write the differential equation for the system shown in Figure P2.1. R(s) 5+ 24+ 453+ 32 + 4 C(s) g6+ 75 + 35 + 25 + s+5 FIGURE P2.1

Write the following mathematical expressions in Java. YRS INT FV = PV 1+ 100 G = 4x2. c= Va? + b2 - 2abcosy C = p2(m, + m2)

Price the following double knockout option: the option has barriers at levels S u and S d , above and below the initial asset price, respectively. The option has payoff $1, unless the asset touches...

A shaft carries five masses A, B, C, D and E which revolve at the same radius in planes which are equidistant from one another. The magnitude of the masses in planes A, C and D are 50 kg, 40 kg and...

A parallel-plate air-filled capacitor has a capacitance of 50pF. (a) If each of its plates has an area of 0.35 m2, what is the separation? (b) If the region between the plates is now filled with...

A particle moves along a straight path through displacement d = (8 m)i + cj while force F = (2 N)i (4N)i acts on it. (Other forces also act on the particle.) What is the value of c if the work done...

Figure gives the torque r that acts on an initially stationary disk that can rotate about its center like a merry-go-round. The scale on the r axis is set by r?2 = 4.0 N ? m. What is the angular...

2. What diagnostic plot can you use to determine whether the incorrect model has been used? What should the plot look like if the correct model has been used?

4. The normal probability plot and the residuals versus fitted values were generated using the MINITAB regression analysis program for the data that follow ( Exercise 18, Section 12.1). Does it...

17. Armspan and Height II In Exercise 22 (Section 12.1), we measured the armspan and height of eight people with the following results: a. Do the data provide sufficient evidence to indicate that...