1a. A horizontally directed force of 100 N is used to pull a box a distance...
1a. A horizontally directed force of 100 N is used to pull a box a distance of 5 m. How much work is done by the force? What is the change of kinetic energy of the box?
1b. At the lowest point in its swing, a pendulum bob with a mass of 0.1 kg has a velocity of 2 m/s. Ignoring the resistance of the air, how high will the bob swing above the lowest point before reversing direction? g=10 m/s2
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1a. A horizontally directed force of 100 N is used to pull a box
a distance...
1. /2 points GrifEP7 6.E.12. At the low point in its swing, a pendulum bob with...
1. /2 points GrifEP7 6.E.12. At the low point in its swing, a pendulum bob with a mass of 0.7 kg has a velocity of 8 m/s (a) What is its kinetic energy at the low point? (b) Ignoring air resistance, how high will the bob swing above the low point before reversing direction?
You pull a box 45 degrees from the horizontal with 50N force. The box is moving...
You pull a box 45 degrees from the horizontal with 50N force. The box is moving at a constant velocity. How much force is done by the kinetic friction? For any problems with tensions, pushing or moving boxes, draw out a free body diagram. You only want the kinetic frictional force which is only on the x direction, so let's sum up the forces in the x Fr=maio (28)
1a . A constant force of 32.3 N pulls on a 20 kg block on a...
1a . A constant force of 32.3 N pulls on a 20 kg block on a horizontal surface. The force is directed at 30o above the horizontal. A friction force impedes the motion. If at the start of the motion the block was at rest and after 11 meters it has a velocity of 3, what is the coefficient of friction? 1b. What is the work done by the constant force when the block is moved 8 meters? 2.What constant,...
A light spring having a force constant of 125 N/m is used to pull a 8.60...
A light spring having a force constant of 125 N/m is used to pull a 8.60 kg sled on a horizontal ice rink. The coefficient of kinetic friction between the sled and the ice is 0.200. The sled has an acceleration of 2.27 m/s2. By how much does the spring stretch if it pulls on the sled horizontally? By how much does the spring stretch if it pulls on the sled at 30.0∘ above the horizontal?
A tension force of 155 N inclined at 35.0° above the horizontal is used to pull...
A tension force of 155 N inclined at 35.0° above the horizontal is used to pull a 33.0 kg storage crate a distance of 4.10 m on a rough surface. If the crate moves at a constant speed, find (a) the work done by the tension force and (b) the coefficient of kinetic friction between the crate and surface. (a)the work done by the tension force (in J) J (b)the coefficient of kinetic friction between the crate and surface
A tension force of 135 N inclined at 15.0° above the horizontal is used to pull...
A tension force of 135 N inclined at 15.0° above the horizontal is used to pull a 29.0 kg storage crate a distance of 3.60 m on a rough surface. If the crate moves at a constant speed, find (a) the work done by the tension force and (b) the coefficient of kinetic friction between the crate and surface HINT (a) the work done by the tension force (in J) X J Enter a number. (b) the coefficient of kinetic...
handwritten with explanation please 9. A 3.59 X 102-N force is used to pull a 95.0-kg...
handwritten with explanation please 9. A 3.59 X 102-N force is used to pull a 95.0-kg refrigerator across a horizontal surface. The force acts at an angle of 23.50 above the horizontal surface. The coefficient of kinetic friction is 0.289, and the refrigerator moves a distance of 12.3 m. (a) What is the work done by the pulling force? (b) What is the work done by the kinetic frictional force?
1)The string in the figure is L = 100.0 cm long, and the distance d to...
1)The string in the figure is L = 100.0 cm long, and the distance d to the fixed peg at point P is 62.5 cm. When the initially stationary ball is released with the string horizontal as shown, it will swing along the dashed arc. What is its speed when it reaches its lowest point 2)What is its speed when it reaches its highest point after the string catches on the peg 3) A constant force of 45.5 N, directed...
A tension force of 145 N inclined at 25.0° above the horizontal is used to pull...
A tension force of 145 N inclined at 25.0° above the horizontal is used to pull a 39.0 kg shipping crate a distance of 3.60 m on a rough surface. If the crate moves at a constant speed, find (a) the work done by the tension force and (b) the coefficient of kinetic friction between the crate and surface. i know that a is 473.09 but i cant figure out part b.
A horizontal force of 150 N is used to push a 40-kg box on a rough,...
A horizontal force of 150 N is used to push a 40-kg box on a rough, horizontal surface through a distance of 6 m. If the box moves at a constant speed, find: a) the work done by the 150 N force b) the work done by friction c) the coefficient of kinetic friction
1. /2 points GrifEP7 6.E.12. At the low point in its swing, a pendulum bob with a mass of 0.7 kg has a velocity of 8 m/s (a) What is its kinetic energy at the low point? (b) Ignoring air resistance, how high will the bob swing above the low point before reversing direction?
You pull a box 45 degrees from the horizontal with 50N force. The box is moving at a constant velocity. How much force is done by the kinetic friction? For any problems with tensions, pushing or moving boxes, draw out a free body diagram. You only want the kinetic frictional force which is only on the x direction, so let's sum up the forces in the x Fr=maio (28)
A tension force of 135 N inclined at 15.0° above the horizontal is used to pull a 29.0 kg storage crate a distance of 3.60 m on a rough surface. If the crate moves at a constant speed, find (a) the work done by the tension force and (b) the coefficient of kinetic friction between the crate and surface HINT (a) the work done by the tension force (in J) X J Enter a number. (b) the coefficient of kinetic...
A horizontal force of 150 N is used to push a 40-kg box on a rough, horizontal surface through a distance of 6 m. If the box moves at a constant speed, find: a) the work done by the 150 N force b) the work done by friction c) the coefficient of kinetic friction
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