An old building is being demolished by swinging a heavy metal ball from a crane. Suppose that such a 100 kg ball swings from a 20-m-long wire at speed 16 m/s as the wire passes the vertical orientation. What tension force must the wire be able to withstand in order not to break? Express your answer with the appropriate units. Tbottom= Value Units Submit Request Answer Part B Assume the ball stops after sinking 1.5 m into the wall. What was the average force that the ball exerted on the wall? Express your answer with the appropriate units. HA ? FB on W= Value Units

A 65 kg person running at 2.0 m/s jumps onto the skim board at right. The skim board is 50 cm wide and 120 cm long, with an area of 0.60 m². Part A Draw a sketch of this situation. Part B If the person jumps onto the board on sand with a coefficient of friction of f=0.50, what force will resist the forward movement of the board [N]? Recall the friction force is the normal force times the coefficient of friction. Part C Now assume the person jumps onto the board on a 0.50 cm film of fresh water at 30°C. Use Newton's law of viscosity to estimate the force resisting the forward movement of the board.

Two blocks are connected by a massless rope. The rope passes over an ideal (frictionless and massless) pulley such that one block with mass m1 = 12.25 kg is on a horizontal table and the other block with mass m2 = 7.5 kg hangs vertically. Both blocks experience gravity and the tension force, T. Use the coordinate system specified in the diagram. a.)  Assuming friction forces are negligible, write an expression, using only the variables provided, for the acceleration that the block of mass m1 experiences in the x-direction. Your answer should involve the tension, T. b.)  Under the same assumptions, write an expression for the acceleration, a2, the block of mass m2 experiences in the y-direction. Your answer should be in terms of the tension, T and m2. c.) Carefully consider how the accelerations a1 and a2 are related. Solve for the magnitude of the acceleration, a1, of the block of mass m1, in meters per square second. d.)Find the magnitude of the tension in the rope, T, in newtons.

Two blocks with masses mд and m³ are connected by a massless string over a massless, frictionless pulley. Block B, which is more massive than block A, is released from height h and falls. Part A Write an expression for the speed of the blocks just as block B reaches the ground. Express your answer in terms of some, all, or none of the variables mÃ, m³, h, and the free-fall acceleration g. V = Submit Part B xa h = Submit Π ΑΣΦ 0 Xb 016 μᾶ a Request Answer Value √x vx x 18 A 1.0 kg block and a 2.0 kg block are connected by a massless string over a massless, frictionless pulley. The impact speed of the heavier block, after falling, is 1.4 m/s. From how high did it fall? Express your answer with the appropriate units. Request Answer Units <४ = |X| www ? X.10n

Part E Problem: Thinking and Investigation 44. In testing a new material to be used in non-slip door mats. Scientists made a mat made of this new material, and did the following experiment. A force (F) was used to pull a wooden block across the mat as shown below.(5) m μ The size of the force was varied and the data table below shows the size of the force and the block's resulting acceleration. F(N) (m/s²) 20 0.25 25 0.85 30 1.35 35 1.95 Plot the data on the graph below and draw a line of best fit. Extend the line back to the 'y' axis so that you have a y-intercept point and determine the slope of the line. F (N) The industrial standard for the coefficient of friction for non-slip mats is 0.85. a) Using your slope value and your y-intercept value from the graph, determine the coefficient of friction between the block and the mat. b) Would this mat be approved for production based on its coefficient of friction? Briefly explain. 11 of

The 7 lb particle is subjected to the action of its weight and forces F1 {2i + 6j 2tk} lb, F2 = {t°i – 4tj – 1k} lb. and F3 = {-2ti} lb. where tis in seconds. F3 Part A Determine the distance the ball is from the origin 2 s after being released from rest. Express your answer to three significant figures and include the appropriate units. Hint 1. How to analyze spatial movement In order to analyze movement of the ball, consider its movement along each axis independently from others. You can do so, because each force component does not depend on others, only on time t. Set up and solve equations of motion along each axis. Do not forget weight acting in the negative z direction. Hint 2. How to detemine distance from the origin at 2s From equations of motion along each axis you can express components of the ball's acceleration as functions of time t. Using them and the fact that the ball starts from rest, you can express velocity components as functions of t. Finally, because the ball…

An 8.00 kg crate sits on an inclined plane that is inclined at 33.0 above the horizontal. The coefficient of kinetic friction between the crate and the surface of the plane is 0.300. A constant horizontal force F = 28.0 N is applied to the crate (Figure 1), and the crate moves down the plane. Part A If the crate is initially at rest, find its speed 2.00s after the force is applied? Express your answer with the appropriate units. HA Value Units Figure 1 of 1> Submit Request Answer Provide Feedback F 33.0°

Two 150 kg lead spheres are suspended from 100-m-long massless cables. The tops of the cables have been carefully anchored exactly 1 m apart. Part A By how much is the distance between the centers of the spheres less than 1 m? Express your answer to two significant figures and include the appropriate units. Ax = ¹"¯μA Value Units ?

com/course.html?courseld-17255520&OpenVellumHMAC=197f22d4a42226c194d42c759b32e18a#10001 Part A What is the speed of the potato at the lowest point of its motion? A 0.280 kg potato is tied to a string with length 1.50 m, and the other end of the string is tied to a rigid support. The potato is held straight out horizontally from the point of support, with the string pulled taut, and is then released. Express your answer in meters per second. [VD ΑΣΦ 49 a x Xb b √x x x x 1X1 V = m/s Submit Previous Answers Request Answer X Incorrect; Try Again Part B What is the tension in the string at this point? Express your answer in newtons. T = 8.23 N P Pearson Copyright © 2022 Pearson Education Inc. All rights reserved. | Terms of Use | Privacy Policy | Permissions Contact 12,772 APR ⠀⠀⠀ 28 A tv A O DII F8 2 M #3 E 80 F3 $ 4 000 000 F4 R % 5 F5 T A 6 F6 Y & 7 ◄◄ F7 U * 00 8 9 DD F9 0 ? X.10n X S ) 0 79 F10 P

If you free the cork in a highly pressurized champagne bottle, the resulting launch of the cork will, in principle, cause the bottle to recoil. A filled champagne bottle has a mass of 1.8 kg. The cork has a mass of 7.5 g and is launched at 18 m/s. Part A If the bottle could move freely, with what speed would it recoil? Express your answer with the appropriate units. HA Value Units Vbottle = Submit Request Answer Part B Complete previous part(s) Provide Feedback HP All-in-One hp REDESIGNED. RELIABLE. READY FOR YOU Power New, colorful ripple pattern