The sports car shown in (Figure 1) has been designed so that the 260-kgengine E and 165-kg transmission I have been placed over the front and rearwheels, respectively. Their mass centers are located at Gg and Gr. The masscenter of the remaining 512-kg body and frame is located at G₁.Figure-1.25 m- 1.46 m0.60 m< 1 of 1Part AIf power is supplied to the rear wheels only, determine the shortest time it takes for the car to reach a speed of 80 km/h, starting from rest. The front wheels are free rolling, and the coefficientof static friction between the powered wheels and the road is = 0.56. Neglect the mass of the wheels and driver.Express your answer to three significant figures and include the appropriate units.t=ValueSubmitμAProvide FeedbackRequest AnswerUnits?Next >

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Answered: The sports car shown in (Figure 1) has…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Problem: A person on a bicycle of mass 85 kg ( including the bicycle) can slow down at velocity of 3.60m/s? safely without skidding when approaching the next stop on the road. a. Draw the free-body diagram, including all the forces that apply to the problem. b. How would the free body diagram look on the person one the bike if the road was inclined uphill at 18 degrees? How would its deceleration change if the road was increased to 18 degrees? c. If the bieyelist elimbs up the hill at a speed of 8.0km/h because of the air resistance. What force would be necessary to climb the hill at the same speed with the same air resistance?
A spherical bowling ball with mass m = 4.6 kg and radius R = 0.105 m is thrown down the lane with an initial speed of v = 9.5 m/s. The coefficient of static friction between the ball and the ground is 0.35 and the coefficient for kinetic friction is μ = 0.3. Once the ball begins to roll without slipping it moves with a constant velocity down the lane. 1) What is the magnitude of the angular acceleration of the bowling ball as it slides down the lane? 2) What is magnitude of the linear acceleration of the bowling ball as it slides down the lane? 3) How long does it take the bowling ball to begin rolling without slipping? 4) Once it begins to roll without slipping, what is the force of friction on the ball?
1. Two blocks are connected by a pulley system shown in the figure below. Neglect friction between the block on the left and the ramp sloped at angle 0. Suppose that the block on the left has mass m, and that the block on the right is moving downward at a constant speed v. m Given m, 0, and v, answer the questions below. (a) Find the mass of the block on the right? (b) Find the velocity of the block on the left. (c) If the block on the right was moving at a constant speed v upward, instead of downward, how would your answer to Question la change?
In a satellite model for a science project, given the masses of the three satellites m=1.8 kg, mg= 4 kg, and m.=5 kg that are connected with massless rods, joined at the point the rotation axis is passing through. The satellites have the distances rad R=1.5 m, R = 1 m, and Rc=2 m, from the rotation axis. The system rotates with an angular speed w = 2.7 mA RA RB RC mc 1. Calculate the moment of inertia I; for this model: /, = kg m2 m2 kg 2. Calculate the magnitude of the angular momentum L, = 3. Calculate the rotational kinetic energy K, = J 4. As the system is rotating counter-clockwise the direction of the vector is The mass mc was not properly glued and breaks away during the rotation. 1. Calculate the moment of inertia /f for this model now. If= |kg m2 2. Using the conservation of angular momentum, calculate the angular speed wf after the mass m, has broken away during rad the rotation. Wf= 3. Calculate the rotational kinetic energy in this situation: K=
A car A is stuck on the railroad tracks as a train B approaches with a speed of 120 km/hr. As soon as the problem is detected, the train's emergency brakes are activated, locking the wheels and causing the train's wheels to slide relative to the tracks. If the co-efficient of kinetic friction between the wheels and the track is 0.2, use work energy principle to determine the minimum distance d at which the brakes must be applied to avoid a collision under the following circumstances. Mass of the train is 195,000 kg. A B d
IV. For the following system that starts from rest, the spool has a weight of 300 N and a radius of gyration ke = 0.3 m, and block A is attached to it as shown of weight 200 N. A constant horizontal force F is applied to the cord in order to give the block an upward speed of 5 m/s. (Neglect mass of cord and tension force). -F 1. Draw the free body diagram of the system. 2. Calculate the angular speed of the spool at t= 6 seconds. 3. Calculate the vertical reaction force at the pin at t= 6 seconds. 4. Calculate the horizontal force F.
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An object of mass m1 slides on a sloped block of mass M2, which in turn slides on a horizontal surface. The slope angle is a constant 3, and both masses are initially at rest. There is no friction between any of the objects, and the masses are subject to the force of gravity -mgêy. Use as co- ordinates the horizontal position x2 of mass m2, and the height y1 of mass m1, as shown in the y4 Y1 M2 x2 diagram to the right. Find the equation of motion of block 2, ä2(t). The expression should only include expressions involving constants: M2, m1, g, and B.
Peturn to tnis part. NOTE: This is a multl-part question. Once an answer is submitted, you wII be unabie A 1-lb ball A and a 2-lb ball B are mounted on a horizontal rod which rotates freely about a vertical shaft. The balls are held in the positions shown by pins where ra = 10 in. The pin holding Bis suddenly removed and the ball moves to position C as the rod rotates. Neglect friction and the mass of the rod and know that the initial speed of A is VA = 8 ft/s. VB 16 in. 16 in. -8 in.- A В Determine the radial and transverse components of the acceleration of ball B immediately after the pin is removed. | ft/s?. ]f/s?. The radial component is The transverse component is

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