Homework Answers
Rate of change of angular momentum is equal to torque. We use
this fact to find the required magnitude and direction as shown
below
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A 2.80 kg rock has a horizontal velocity of magnitude 12.0 m/s when it is at...
A 2.00-kg rock has a horizontal velocity of magnitude 12.0 m/s when it is at point P in the figure (Figure 1). (a) At...
A 2.00-kg rock has a horizontal velocity of magnitude 12.0 m/s when it is at point P in the figure (Figure 1). (a) At this instant, what are the magnitude and direction of its angular momentum relative to point O? (b) If the only force acting on the rock is its weight, what is the rate of change (magnitude and direction) of its angular momentum at this instant?
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A 3.20 kgkg rock has a horizontal velocity of magnitude 12.0 m/sm/s when it is at point PP in the figureAt this instant, what is the magnitude of its angular momentum relative to point OO?Express your answer in kilogram-meters squared per second.b) If the only force acting on the rock is its weight, what is the magnitude of the rate of change of its angular momentum at this instant?Express your answer in kilogram-meters squared per second squared.
An airplane of mass 10,000 kg is flying over level ground at a constant altitude of...
An airplane of mass 10,000 kg is flying over level ground at a constant altitude of 4.30 km with a constant velocity of 165 m/s west. Its direction is currently straight toward the top of a mountain. At a particular instant, a house is directly below the plane at ground level. (a) At this instant, what is the magnitude of the plane's angular momentum relative to the house (in kg m-/s)? kg. m/s (b) As the plane continues its constant...
Object 1 has a mass mi and a velocity v1 = (2.20 m/s )*. Object 2...
Object 1 has a mass mi and a velocity v1 = (2.20 m/s )*. Object 2 has a mass m2 and a velocity v2 = (3.30 m/s ý. The total momentum of these two objects has a magnitude of 20.0 kg. m/s and points in a direction 70.0° above the positive o axis. You may want to review (Pages 258 - 259). Part A Find mi. VO AED ? PER m = kg Submit Request Answer Part B Find m2...
Part A If the velocity of a pitched ball has a magnitude of 43.5 m/s and...
Part A If the velocity of a pitched ball has a magnitude of 43.5
m/s and the batted ball's velocity is 60.0 m/s in the opposite
direction, find the magnitude of the change in momentum of the ball
and of the impulse applied to it by the bat. Express your answer to
three significant figures and include the appropriate
units.
Constants Force of a Baseball Swing. A baseball has mass 0.137 kg - Part A If the velocity of a...
At the instant of the figure, a 4.10 kg particle P has a position vector r of magnitude 9.10 m and angle θ1 = 44.0° and a velocity vector v of magnitude 4.60 m/s and angle θ2= 33.0°
At the instant of the figure, a 4.10 kg particle P has a position vector r of magnitude 9.10 m and angle θ1 = 44.0° and a velocity vector v of magnitude 4.60 m/s and angle θ2= 33.0°. Force F,of magnitude 5.30 N and angle θ3 = 33.0° acts on P. All three vectors lie in the xy plane. About the origin, what are the magnitude of (a) the angular momentum of the particle and (b) the torque acting on...
g vluelty 1im/s,0,-2m/s), and its mass is 0.5kg? sr=13 m, 5 m,--2 m Consider a rider...
g vluelty 1im/s,0,-2m/s), and its mass is 0.5kg? sr=13 m, 5 m,--2 m Consider a rider on a Ferris wheel of radius R that s in the xz plane and is rotating clockwise with angu- lar velocity W. At every instant, then, a person riding or ider of mass m who at a certain instant is passing the (a) At that instant, what is the magnitude and direction of (b) What is the magnitude and direction of the rider's wheel's...
Review You may want to review (Pages 321-323) What is the magnitude of the angular momentum...
Review You may want to review (Pages 321-323) What is the magnitude of the angular momentum of the 2.80 kg, 4.70-cm-diameter rotating disk in the figure (Figure 1)? kg m2s Submit Figure 1 of 1 Part B What is its direction? xdirection -x direction ydirection y direction zdirection -z direction
Consider a projectile of mass 20 kg launched with a speed 9 m/s at an elevation...
Consider a projectile of mass 20 kg launched with a speed 9 m/s at an elevation angle of 45 degrees. Taking the launch point as the origin of your coordinate system--- What is the magnitude of the angular momentum at launch? kg m/s What is the magnitude of the angular momentum at the instant it reaches maximum height? kg m/s What is the magnitude of the angular momentum at impact?
The slender 12-kg bar has a clockwise angular velocity of ω = 2 rad/s when it is in the position shown Suppose that L = 2.2 m
The slender 12-kg bar has a clockwise angular velocity of ω = 2 rad/s when it is in the position shown Suppose that L = 2.2 m. (Figure 1) Part A Determine its angular acceleration, measured clockwise. Part B Determine the magnitude of the normal reaction of the smooth surface A at this instant. Part C Determine the magnitude of the normal reaction of the smooth surface B at this instant.
An airplane of mass 10,000 kg is flying over level ground at a constant altitude of 4.30 km with a constant velocity of 165 m/s west. Its direction is currently straight toward the top of a mountain. At a particular instant, a house is directly below the plane at ground level. (a) At this instant, what is the magnitude of the plane's angular momentum relative to the house (in kg m-/s)? kg. m/s (b) As the plane continues its constant...
Object 1 has a mass mi and a velocity v1 = (2.20 m/s )*. Object 2 has a mass m2 and a velocity v2 = (3.30 m/s ý. The total momentum of these two objects has a magnitude of 20.0 kg. m/s and points in a direction 70.0° above the positive o axis. You may want to review (Pages 258 - 259). Part A Find mi. VO AED ? PER m = kg Submit Request Answer Part B Find m2...
Part A If the velocity of a pitched ball has a magnitude of 43.5
m/s and the batted ball's velocity is 60.0 m/s in the opposite
direction, find the magnitude of the change in momentum of the ball
and of the impulse applied to it by the bat. Express your answer to
three significant figures and include the appropriate
units.
Constants Force of a Baseball Swing. A baseball has mass 0.137 kg - Part A If the velocity of a...
g vluelty 1im/s,0,-2m/s), and its mass is 0.5kg? sr=13 m, 5 m,--2 m Consider a rider on a Ferris wheel of radius R that s in the xz plane and is rotating clockwise with angu- lar velocity W. At every instant, then, a person riding or ider of mass m who at a certain instant is passing the (a) At that instant, what is the magnitude and direction of (b) What is the magnitude and direction of the rider's wheel's...
Review You may want to review (Pages 321-323) What is the magnitude of the angular momentum of the 2.80 kg, 4.70-cm-diameter rotating disk in the figure (Figure 1)? kg m2s Submit Figure 1 of 1 Part B What is its direction? xdirection -x direction ydirection y direction zdirection -z direction
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