PracticeTest2 - PHYS2305: Practice Test 2 Please note that...

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PHYS2305: Practice Test 2 Please note that the actual test will not necessary have the same questions as in this practice test. This practice test is to help you to study in preparation of the upcoming test. DO NOT assume that there will be the same questions in the real test. Use the following to answer questions 1-2: A 10-kg block is connected to a 40-kg block as shown in the figure. The surface on that the blocks slide is frictionless. A force of 50 N pulls the blocks to the right. 1. What is the magnitude of the acceleration of the 40-kg block? A) 0.5 m/s 2 B) 1 m/s 2 C) 2 m/s 2 D) 4 m/s 2 E) 5 m/s 2 2. What is the magnitude of the tension T in the rope that connects the two blocks? A) 0 N B) 10 N C) 20 N D) 40 N E) 50 N 3. Determine the minimum angle at which a roadbed should be banked so that a car traveling at 20.0 m/s can safely negotiate the curve if the radius of the curve is 2.00 × 10 2 m. A) 0.200° B) 0.581° C) 11.8 D) 19.6° E) 78.2° 4. A car enters a horizontal, curved roadbed of radius 50 m. The coefficient of static friction between the tires and the roadbed is 0.20. What is the maximum speed with which the car can safely negotiate the unbanked curve? A) 5 m/s B) 10 m/s C) 20 m/s D) 40 m/s E) 100 m/s 5. A 25-kg box is sliding down an ice-covered hill. When it reaches point A, the box is moving at 11 m/s. Point A is at the bottom of a circular arc that has a radius R = 7.5 m. What is the magnitude of the normal force on the box at Point A? A) 250 N B) 280 N C) 400 N D) 650 N E) 900 N Page 1
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6. A 0.75-kg ball is attached to a 1.0-m rope and whirled in a vertical circle. The rope will break when the tension exceeds 450 N. What is the maximum speed the ball can have at the bottom of the circle without breaking the rope? A) 24 m/s B) 12 m/s C) 32 m/s D) 16 m/s E) 38 m/s Use the following to answer questions 7-8: A small car of mass M travels along a straight, horizontal track. As suggested in the figure, the track then bends into a vertical circle of radius
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PracticeTest2 - PHYS2305: Practice Test 2 Please note that...

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