ISBN=9780357036358&snapshotld=879126&id=340216224&eIntegral Calculator ⚫...MINDTAPof EnergyAAa s77. N A block of mass m₁ = 4.00 kg initially at rest on top of a frictionless, horizontal table is attachedby a lightweight string to a second block of mass m2 = 3.00 kg hanging vertically from the edge ofthe table and a distance h = 0.450 m above the floor (Fig. P8.77). If the edge of the table is assumedto be frictionless, what is the speed with which the first block leaves the edge of the table?Figure P8.77mim2Answer78. A Eric is twirling a ball of mass m = 0.150 kg attached to a lightweight string in a vertical circle. Ifthe total energy of the system is conserved, by what factor does the tension on the string increase

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Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter5: Newton's Laws Of Motion

Section: Chapter Questions

Problem 70PQ: A 1.50-kg particle initially at rest and at the origin of an xy coordinate system is subjected to a...

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You are in charge of improving the safety of a carnival ride. The ride involves a 165 kg cart travelling at 13.1 the wall. m S toward a brick wall. The cart is supposed to stop at the last second just before it hits You want the cart to come to a complete stop within a time of 1.85 s. What force is required to stop the cart in this amount of time? F = N Based on the parts you have been provided, you are able to exert a force of 3820 N on the cart. What is the maximum initial speed that the cart could have and still stop within 1.85? Vmaximum = m S
Constact Chvis jumps of a bridge with a bungee cord (a heavy stretchable cord) tied around his ankle. (Foe). He falls for 15 m belore the bungee cord begins to stretch Chris's mass is 79 kg and we assune the cord obeys Hooke's law, F ke, with 60 N/m Part A we neglect air resistance, estimate what distance d beiow the bridge Chrss foot will be before coming to aslop Ignore the mass of the cord not realstic, however) and treat Chris as a particle Express your anewer to two signiticant figures and include the appropriate units d- Value m Submit Pevious Aners Beauest Aner Figure 1 of 1 X Incorrect; Try Again; One attempt remaining (b) (c) 15m Erovide. Feedback Next> Dy? Pearson
Two blocks are connected by a light string that passes over a frictionless pulley. The system is released from rest while m2 is on the floor and m1is a distance h above the floor. a. Assuming m1 > m2, find an expression for the speed of m1 just as it reaches the floor. b. Taking m1 = 6.5 kg, m2 = 4.2 kg, and h = 3.2 m, evaluate your answer to part (a) c. find the speed of each block when m1 has fallen a distance of 1.6 m.
An object with a mass of 1.76 kg is initially at rest upon a horizontal, frictionless surface. An applied force of 3.04 N i acts on the object for 2.08 s. What is the object's final speed? Enter a number rounded to 2 decimal places and assume the answer has proper SI Units.
A 19.8-kg box is moving due east at a constant velocity of 15.5 m/s. Compute the normal force exerted by the surface on the box. a. 1.63 N b. 20.20 N c. 306.90 N d. 194.04 N A 57.1 kg person jumps on the ground from a height of 1.42 m. If he lands stiffly (with his knee joints compressing by 0.500 cm). Calculate the force on the knee joint. a. 111916.00 N b. 16216.40 N c. 158920.72 N d. 1589.21 N
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A 56-kg student runs at 4.2 m/s, grabs a hanging 10.0-m-long rope, and swings out over a lake (Figure 1). He releases the rope when his velocity is zero. a.)What is the angle θ when he releases the rope? Express your answer to two significant figures and include the appropriate units. b.)What is the tension in the rope just before he releases it? Express your answer to two significant figures and include the appropriate units. c.)What is the maximum tension in the rope during the swing? Express your answer to two significant figures and include the appropriate units.

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