College Physics
11th Edition
ISBN: 9781305952300
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
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- okp 9. To measure the static friction coefficient between a 1.25-kg block and a vertical wall, a spring (k = 790 N/m) is attached to the block, is pushed on the end in a direction perpendicular to the wall until the block does not slip downward (see figure). If the spring is compressed by 0.048 m, what is the coefficient of static friction? p136 skpl (p136 skp136 skp136 skp136 sko 136 skp136 skp136 so136 skp136 skp 36 sk1 36 sk skp136 skp136 skp136 skp136 skpl skp136 skp136 skp skp dreamstimemearrow_forwardsi 9. A 1.65 kg box rests on a plank that is inclined at an angle of 68.0° above the horizontal. The upper end of the box is attached to a spring with a force constant of 18.0 N/m, as shown in the figure. If the coefficient of static friction between the box and the plank is 0.28, what is the maximum amount the spring can be stretched and the box remain at rest? m f60 ssf60 ssico ss$60 ssf60** ssf60 ssf60 ssf60 ssf60 ssfossf60 ssf bood ssf60 ssf60 ss ] …………¶¶¶õõ‰¶¶¶¯¯¯ ¶ 50 ssf60 s f60 ssf60 ssf60 ss£60 SS sf60160 ssf60 ssf60 ssf60ain f60 sf60 ssf60 ssf60 ssf60 ƒ60 ssf60 ssf60 ssfarrow_forward1. A 97 g ball bobbing up and down on the ocean as the waves roll by has a vertical position that can be described as a function of time by x(t) = cos(10t). What is the force on the ball at a time of 4.6 seconds? Note: The argument of the cosine function is in radians. Hint: Don't forget the sign of the force. F = 6.74 X√ Narrow_forward
- 3. A simple pendulum is suspended from the ceiling by means of a string of length 1.60 m. Now you start with the pendulum at 16.6 degrees with respect to the vertical, but rather than releasing it from rest, you give it a push downward. It swings to the other side, and reaches a maximum angle of 55.4 degrees with respect to the vertical. What must have been the initial speed of the pendulum just after you pushed it? 4.78 m/s 3.50 m/s 3.68 m/s 1.14 m/sarrow_forwardA small ball is attached to one end of a spring that has an unstrained length of 0.185 m. The spring is held by the other end, and the ball is whirled around in a horizontal circle at a speed of 4.80 m/s. The spring remains nearly parallel to the ground during the motion and is observed to stretch by 0.0190 m. By how much would the spring stretch if it were attached to the ceiling and the ball allowed to hang straight down, motionless? Number Unitsarrow_forward4.arrow_forward
- A1 kg mass is tied to a string and is being swung in a horizontal circle. The mass has a constant angular velocity of 0.3 rad/s. The string has a Young's modulus of 10 X 106 N/m?, and the string's original length is 0.7 m long. The radius of the string is 0.05 cm. How much does the string stretch? You can think of the string as being shaped like a long, thin cylinder. 5.6 mm 2.7 mm 3.2 mm 4.7 mm 3.8 mmarrow_forwardK Question 13 of 32 A spring hangs from the ceiling with an unstretched length of xo = 0.99 m. A m¡ = 9.1 kg block is hung from the %3D spring, causing the spring to stretch to a length X = 1.18 m. Find the length x2 of the spring when a m2 = 3.3 kg block is hung from the spring. For both cases, all vibrations of the spring are allowed to settle down before any measurements are made. m2 X2 = %3D 0.04 m m,arrow_forwardA 0.200-m uniform bar has a mass of 0.676 kg and is released from rest in the vertical position, as the drawing indicates. The spring is initially unstrained and has a spring constant of k = 28.0 N/m. Find the tangential speed with which end A strikes the horizontal surface. Number i Units 0.100 m Pivot (friction less) 0.100 m 0.100 marrow_forward
- 4. A simple pendulum is suspended from the ceiling by means of a string of length 1.44 m long. Suppose you start with the pendulum hanging vertically, at rest. You then give it a push so that it starts swinging with a speed of 1.53 m/s. What maximum angle (in degrees) will it reach, with respect to the vertical, before falling back down? 32.9 degrees 28.2 degrees 23.5 degrees 16.5 degreesarrow_forward10arrow_forward
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