College Physics 1 Questions & Answers

College Physics 1 Questions & Answers A 0.2-kg block is held in place by a force that results in a 0.10-m compression of a spring beneath the block. The spring constant is 1.0 × 102 N/m. Assuming the mass of the spring is negligible compared to that of the block, to what maximum height would the block rise if the force were removed. A) 0.26 m B) 0.52 m C) 2.5 m D) 5 m E) 10 m - ANSWER: A) 0.26 m A 0.254-m diameter circular saw blade rotates at a constant angular speed of 117 rad/s. What is the tangential speed of the tip of a saw tooth at the edge of the blade? A) 29.7 m/s B) 14.9 m/s C) 9.46 m/s D) 7.45 m/s E) 2.17 m/s - ANSWER: B) 14.9 m/s A 0.750-kg object hanging from a vertical spring is observed to oscillate with a period of 1.50 s. When the 0.750-kg object is removed and replaced by a 1.50-kg object, what will be the period of oscillation? A) 1.55 s B) 2.58 s C) 2.12 s D) 3.38 s E) 4.49 s - ANSWER: C) 2.12 s A 0.800-kg block is placed on top of a vertically oriented spring as shown. The block is not attached to the spring, but the spring is attached to the floor. The block oscillates in simple harmonic motion. If the spring constant is 95.0 N/m, determine the amplitude at which the block loses contact with the spring. A) 0.0505 m B) 0.0615 m C) 0.0735 m D) 0.0825 m E) 0.0945 m - ANSWER: D) 0.0825 m A 1.0-kg block oscillates with a frequency of 10 Hz at the end of a certain spring. The spring is then cut into two halves. The 1.0-kg block is then made to oscillate at the end of one of the halves. What is the frequency of oscillation of the block? A) 5 Hz B) 10 Hz C) 14 Hz D) 20 Hz E) 40 Hz - ANSWER: C) 14 Hz A 1.0-kg wheel in the form of a solid disk rolls along a horizontal surface with a speed of 6.0 m/s. What is the total kinetic energy of the wheel? A) 9.0 J B) 18 J C) 27 J D) 36 J E) 54 J - ANSWER: C) 27 J A 1.0-m roulette wheel reaches a maximum angular speed of 18 rad/s before it begins decelerating. After reaching this maximum angular speed, it turns through 35 revolutions (220 rad) before it stops. How long did it take the wheel to stop after reaching its maximum angular speed? A) 12 s B) 48 s C) 3.7 s D) 8.8 s E) 24 s - ANSWER: E) 24 s A 10-kg box is at rest at the end of an unstretched spring with constant k = 4000 N/m. The mass is struck with a hammer giving it a veloc