A body is acted upon by a force. State two conditions when the work done is 0.

Q: (a) If the crate moves at constant speed, what is the work done by the worker on the crate? (b)…

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Q: A 7.80-g bullet moving at 520 m/s penetrates a tree trunk to a depth of 5.30 cm. (a) Use work and…

A: a)Write the mathematical expression for work energy theorem.

Q: Your brand new 75.0-kg refrigerator falls out of the back of your truck while you are traveling up a…

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Q: A 4.4-kg block is pushed 3.5 m up a vertical wall with constant speed by a constant force of…

A: Given information:Mass of the block (m) = 4.4 kgCoefficient of friction between the block and the…

Q: A factory worker pushes a 25.0-kg crate a distance of 6.0 m along a level floor at constant velocity…

A: As the box is moving with uniform velocity i.e. there is no acceleration, we can deduce that the net…

Q: An 8.0 kg sled is initially at rest on a horizontal road. The coefficient of kinetic friction…

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Q: A skeir of mass 115 kg travels down a ski trail. Suppose the ski trail is not frictionless.  a) if…

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Q: A mechanic pushes a 2280 kg car from rest to a speed of v, doing 5252 J of work in the process.…

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Q: W1 is done by a conservative force as an object moves from A to B. Then the scenario is repeated…

A: Work done in case of conservative force depends only on intial and final position. Also the work…

Q: A 339 kg box is pulled 6.00 m up a 30° frictionless, inclined plane by an external force of 4625 N…

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Q: A 349 N force is pulling an 76.7-kg refrigerator across a horizontal surface. The force acts at an…

A: Given Data: Pulling force, F=349 N Refrigerator mass, M=76.7 kg Angle, θ=26.9° Kinetic friction…

Q: Find the work done by (a) the 2250N force and (b) friction

A: Mass of cart = m = 25 kg  F = 2250 N  Angle with horizontal = 60°  Distance= d = 7.5 m  Friction =…

Q: Calculate the work done on a 1500-kg elevator car by its cable to lift it 40.0 m at constant speed,…

A: Using Newton's second law, ΣFy=Fcable-mg-Fs=may=0Fcable-mg-Fs=0Fcable=mg+Fs

Q: Provide an example of a situation that would help explain the concept of "zero work", in regards to…

A: In physics the work may be defined as the dot product of force and displacement. By dot product of…

Q: A 55 kg block is pulled along the ground for a distance of 7.1 m by a 89 N force at an angle of 41…

A: work done can be calculated as, W=Fdcosθ,

Q: A worker pushed a 22.0 kg block 12.0 m along a level floor at constant speed with a force directed…

A: Given value --- mass = 22 kg. distance s = 12 m. angle = 22 degree.  We have to find --- work…

Q: True or false  The potential energy of an object cannot be increased by internal forces. When a…

A: Internal forces are kind of forces that are exchanged by the object in the system. The internal…

Q: You are moving into an apartment and take the elevator to the 6th floor. Suppose your weight is 690…

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Q: A non-constant force on a particle of mass m is given by F = F,| -+1 where Fo and xo are constants.…

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Q: A bag of sand which acts as a counter weight for a stage set is suspended vertically by a rope of…

A: Given:    Mass of the bag, m = 117 kg    Length of the rope, L = 8m    Distance, d = 3m Where, θ is…

Q: Suppose the ski patrol lowers a rescue sled carrying an injured skiier, with a combined mass of 85…

A: Since we only answer up to 3 sub-parts, we’ll answer the first 3. Please resubmit the question and…

Q: A 5.6-kg block is pushed 3.9 m up a vertical wall with constant speed by a constant force of…

A: Hello. Since your question has multiple sub-parts, we will solve the first three sub-parts (a, b,…

Q: You are reshelving books in your dorm room. You lift a book from the ground to the top shelf. The…

A: According to the question, the kinetic energy at the ground and at the final height h(say), the…

Q: A 5.0-kg box has an acceleration of 2.0 m/s2 when it is pulled by a horizontal force across a…

A: Given: Mass of the box = 5 Kg Acceleration of the box = 2 m/s2 Coefficient of the kinetic friction =…

Q: A girl pulls her 15-kg wagon along a flat sidewalk by applying a 10-N force at 37° to the…

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Q: A 50 kg trunk is pushed 6.0 meters at constant speed up a 30 degree incline by a constant horizontal…

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Q: a traveler had to carry a suitcase. an lifted the suitcase to height h, , and then set it back down.…

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Q: A 4.4-kg block is pushed 3.7 m up a vertical wall with constant speed by a constant force of…

A: Solution:   Given Values,

Q: A 54.7-kg skateboarder starts out with a speed of 1.64 m/s. He does 89.7 J of work on himself by…

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Q: A car drives along the highway, maintaining a constant speed of 29 m/s. For all questions below,…

A: Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…

Q: A 434 N force is pulling an 79.0-kg refrigerator across a horizontal surface. The force acts at an…

A: Visualize the Problem:

Q: 1. A man is pulling a suitcase of mass 20 kg along a rough horizontal floor at constant velocity.…

A: The suitcase of mass 20 kg is being pulled by the man across the rough horizontal surface. The force…

Q: A 268-kg crate is being pushed across a horizontal floor by a force P that makes an angle of 38.9 *…

A: Visualize the Problem:

Q: A 6.1-kg block is pushed 2.6 m up a vertical wall with constant speed by a constant force of…

A: Mass of block(m) = 6.1 lg vertical displacement (y) = 2.6 m

Q: A 2.75-meter-long log on a panda sanctuary leans on an almost vertical rock wall and it makes 30⁰…

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Q: Two toboggans (with riders) of the same mass are at rest on top of a steep hill. As they slide down…

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Q: A worker pushing a 35.0-kg wooden crate at a constant speed for 12.0 m along a wood floor does 350 J…

A: The expression for the applied force,

Newton's First Law of Motion

If a very smooth ball is rolled down an inclined surface with zero friction, the ball will continue to roll indefinitely for an infinite time, in an attempt to reach to the same height on the opposite hill!