Physics equations/04-Dynamics: Force and Newton's Laws/Q:sled


 * Solutions to many wikiquiz questions (pdf)
 * Physics_equations/Equations
 * /Testbank/

A
{A sled of mass 5.4 kg is at rest on a rough surface. A string pulls with a tension of 43.4N at an angle of 31 degrees above the horizontal. What is the magnitude of the friction? -a) 24.46 N. -b) 28.13 N. -c) 32.35 N. +d) 37.2 N. -e) 42.78 N.
 * type="" }

{A sled of mass 5.3 kg is at rest on a rough surface. A string pulls with a tension of 44.9N at an angle of 57 degrees above the horizontal. What is the normal force? -a) 8.17 N. -b) 9.39 N. -c) 10.8 N. -d) 12.42 N. +e) 14.28 N.
 * type="" }

{A sled of mass 5.9 kg is at rest on a perfectly smooth surface. A string pulls with a tension of 47.3N at an angle of 48 degrees above the horizontal. How long will it take to reach a speed of 10.8 m/s? -a) 1.15 s -b) 1.32 s -c) 1.52 s -d) 1.75 s +e) 2.01 s
 * type="" }

{A sled of mass 2.1 kg is on perfectly smooth surface. A string pulls with a tension of 17.5N. At what angle above the horizontal must the string pull in order to achieve an accelerations of 2.8 m/s2? +a) 70.4 degrees -b) 80.9 degrees -c) 93.1 degrees -d) 107 degrees -e) 123.1 degrees
 * type="" }

B
{A sled of mass 5.7 kg is at rest on a rough surface. A string pulls with a tension of 41.6N at an angle of 34 degress above the horizontal. What is the magnitude of the friction? -a) 19.72 N. -b) 22.68 N. -c) 26.08 N. -d) 29.99 N. +e) 34.49 N.
 * type="" }

{A sled of mass 5.4 kg is at rest on a rough surface. A string pulls with a tension of 40.4N at an angle of 39 degress above the horizontal. What is the normal force? +a) 27.5 N. -b) 31.62 N. -c) 36.36 N. -d) 41.82 N. -e) 48.09 N.
 * type="" }

{A sled of mass 5.7 kg is at rest on a perfectly smooth surface. A string pulls with a tension of 44.3N at an angle of 31 degress above the horizontal. How long will it take to reach a speed of 9.2 m/s? -a) 0.91 s -b) 1.04 s -c) 1.2 s +d) 1.38 s -e) 1.59 s
 * type="" }

{A sled of mass 2.3 kg is on perfectly smooth surface. A string pulls with a tension of 18.3N. At what angle above the horizontal must the string pull in order to achieve an accelerations of 2.8 m/s2? +a) 69.4 degrees -b) 79.8 degrees -c) 91.8 degrees -d) 105.5 degrees -e) 121.4 degrees
 * type="" }