Homework Answers
A sled weighing 60.0 N is pulled up a snowy hill inclined at 10 degrees to...
A sled weighing 60.0 N is pulled up a snowy hill inclined at 10 degrees to the horizontal at a constant speed so that the coefficient of kinetic friction between sled and snow is 0.070. A penguin weighing 70.0 N rides on the sled. If the coefficient of static friction between penguin and sled is 0.950, find a). the force of friction between the sled and the snow, b). the force of static friction between the penguin and the sled,...
The 1.0 kg block in the figure is tied to the wall with a rope. It sits on top of the 2.0 kg block
1. The 1.0 kg block in the figure is tied to the wall with a rope. It sits on top of the 2.0 kg block. The lower block is pulled to the right with a tension force of 20 N. The coefficient of kinetic friction at both the lower and upper surfaces of the 2.0 kg block is pk = 0.50. (Figure 1) You may want to review (Pages 169 - 172)PART A What is the tension in the rope holding the...
The mass of the child with the sled is 25 kg and the magnitude of the...
The mass of the child with the sled is 25 kg and the magnitude of the push on the child is 45 N acting to the left. The coefficient of kinetic friction between the sled and the snow, mk = 0.15. The magnitude of the friction force is _____N The net force acting on the child-sled system is _____ What will be the ACCELERATION of the sled shown below? _____ m/s2
A boy pulls a 5.0-kg sled with a rope that makes a 60.0° angle with respect...
A boy pulls a 5.0-kg sled with a rope that makes a 60.0° angle with respect to the horizontal surface of a frozen pond. The boy pulls on the rope with a force of 10.0 N, and the sled moves with constant velocity. What is the coefficient of friction between the sled and the ice? A) 0.09 B) 0.10 C) 0.18 D) 0.06 E) 0.24 The answer is C 0.18, I don't undersatnd why.
A 51.9-kg person, running horizontally with a velocity of +3.43 m/s, jumps onto a 14.2-kg sled...
A 51.9-kg person, running horizontally with a velocity of +3.43 m/s, jumps onto a 14.2-kg sled that is initially at rest. (a) Ignoring the effects of friction during the collision, find the velocity of the sled and person as they move away. (b) The sled and person coast 30.0 m on level snow before coming to rest. What is the coefficient of kinetic friction between the sled and the snow?
A 67.6-kg person, running horizontally with a velocity of +4.85 m/s, jumps onto a 19.1-kg sled...
A 67.6-kg person, running horizontally with a velocity of +4.85 m/s, jumps onto a 19.1-kg sled that is initially at rest. (a) Ignoring the effects of friction during the collision, find the velocity of the sled and person as they move away. (b) The sled and person coast 30.0 m on level snow before coming to rest. What is the coefficient of kinetic friction between the sled and the snow?
A loaded penguin sled weighing 80 N rests on a plane inclined at20° to the...
A loaded penguin sled weighing 80 N rests on a plane inclined at
20° to the horizontal. Between the sled and the plane the
coefficient of static friction is 0.26, and the coefficient of
kinetic friction is 0.17.What is the minimum magnitude of the force F, parallel to the
plane, that will prevent the sled from slipping down the
plane?What is the minimum magnitude F that will start the sled moving up
the plane?What value of F is required to...
A loaded penguin sled weighing 64 N rests on a plane inclined at 20° to the...
A loaded penguin sled weighing 64 N rests on a plane inclined at 20° to the horizontal. Between the sled and the plane the coefficient of static friction is 0.20, and the coefficient of kinetic friction is 0.17. (a) What is the minimum magnitude of the force , parallel to the plane, that will prevent the sled from slipping down the plane? ___N (b) What is the minimum magnitude F that will start the sled moving up the plane? ___...
1) Tyrion is pulling a 30 kg sled loaded with ale across an ice lake. Assume...
1) Tyrion is pulling a 30 kg sled loaded with ale across an ice lake. Assume the sled starts from rest and that it moves a distance of 10 m to the right. He pulls the sled to the right with a force of 300 N at angle of 30° above the horizontal. Once again, Cersei is trying to stop Tyrion from leaving and pulls on the sled horizontally to the left with a force of 100 N. Find the...
A father pulls his child on a sled by pulling on a rope over his shoulder...
A father pulls his child on a sled by pulling on a rope over his
shoulder as shown. Using the coefficient of friction for steel on
ice from table 1, calculate the acceleration of the sled if its
mass plus the child is 22 kg, assuming the sled is already in
motion.
Table 1 Approximate Coefficients of Friction of Some Common Materials Materials rubber on concrete (dry) rubber on asphalt (dry) steel on steel (dry) steel on steel (greasy) leather...
A loaded penguin sled weighing 80 N rests on a plane inclined at
20° to the horizontal. Between the sled and the plane the
coefficient of static friction is 0.26, and the coefficient of
kinetic friction is 0.17.What is the minimum magnitude of the force F, parallel to the
plane, that will prevent the sled from slipping down the
plane?What is the minimum magnitude F that will start the sled moving up
the plane?What value of F is required to...
1) Tyrion is pulling a 30 kg sled loaded with ale across an ice lake. Assume the sled starts from rest and that it moves a distance of 10 m to the right. He pulls the sled to the right with a force of 300 N at angle of 30° above the horizontal. Once again, Cersei is trying to stop Tyrion from leaving and pulls on the sled horizontally to the left with a force of 100 N. Find the...
A father pulls his child on a sled by pulling on a rope over his
shoulder as shown. Using the coefficient of friction for steel on
ice from table 1, calculate the acceleration of the sled if its
mass plus the child is 22 kg, assuming the sled is already in
motion.
Table 1 Approximate Coefficients of Friction of Some Common Materials Materials rubber on concrete (dry) rubber on asphalt (dry) steel on steel (dry) steel on steel (greasy) leather...
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