A 5 500-N weight is held suspended in equilibrium by two cables.Cable 1 applies a horizontal force to the right of the object and has a tension,T1.Cable 2 applies a force upward and to the left at an angle of 40.0° to the negative x-axis and has a tension,T2.What is the tension,T1?

A) 4.6E+3 N B) 6.6E+3 N C) 4.2E+3 N D) 8.6E+3 N E) 1.1E+4 N A) 4.6E+3 N B) 6.6E+3 N C) 4.2E+3 N D) 8.6E+3 N E) 1.1E+4 N

A 150-kg crate is placed on an adjustable inclined plane.If the crate slides down the incline with an acceleration of 0.70 m/s2 when the incline angle is 20°,then what should the incline angle be for the crate to slide down the plane at constant speed? (g = 9.8 m/s2)

A) 21° B) 16° C) 11° D) 26° E) 6° A) 21° B) 16° C) 11° D) 26° E) 6°

Exam 4: Newtons Laws of Motion

A 5 500-N weight is held suspended in equilibrium by two cables.Cable 1 applies a horizontal force to the right of the object and has a tension,T₁.Cable 2 applies a force upward and to the left at an angle of 40.0° to the negative x-axis and has a tension,T₂.What is the tension,T₁?

(Multiple Choice)

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Question 41

As I slide a box at constant speed up a frictionless slope,pulling parallel to the slope,the tension in the rope will be:

(Multiple Choice)

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Question 42

A box is to be moved across a level surface.A force of magnitude 200 N may be applied at an angle of 30° below the horizontal to push the box or at an angle of 30° above the horizontal to pull the box,either application sufficient to overcome friction and move the box.Which application will cause the box to have the greater acceleration?

(Multiple Choice)

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Question 43

Two blocks,joined by a string,have masses of 3.0 and 4.0 kg.They rest on a frictionless horizontal surface.A second string,attached only to the 4.0-kg block,has horizontal force = 40 N applied to it.Both blocks accelerate.Find the tension in the string between the blocks.

(Multiple Choice)

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Question 44

As I pull a rope connected to a box at constant speed up a frictionless slope,pulling parallel to the slope,the tension in the rope will be:

(Multiple Choice)

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Question 45

A 150-kg crate is placed on an adjustable inclined plane.If the crate slides down the incline with an acceleration of 0.70 m/s² when the incline angle is 20°,then what should the incline angle be for the crate to slide down the plane at constant speed? (g = 9.8 m/s²)

(Multiple Choice)

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Question 46

A horizontal force of 675 N is needed to overcome the force of static friction between a level floor and a 300-kg crate.What is the acceleration of the crate if the 675-N force is maintained after the crate begins to move and the coefficient of kinetic friction is 0.15?

(Multiple Choice)

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Question 47

A 20.0-kg traffic light hangs midway on a cable between two poles 30.0 meters apart.If the sag in the cable is 0.40 meters,what is the tension in each side of the cable?

(Multiple Choice)

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Question 48

A 14-kg block rests on a level frictionless surface and is attached by a light string to a 5.0-kg hanging mass where the string passes over a massless frictionless pulley.If g = 9.8 m/s²,what is the tension in the connecting string?

(Multiple Choice)

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Question 49

A 500-N block,on a 30.0° incline,is being held motionless by friction.The coefficient of static friction between the block and the plane is 0.63.The force due to friction is:

(Multiple Choice)

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Question 50

A box of mass m is placed on an incline with angle of inclination θ.The box does not slide.The magnitude of the frictional force in this case is:

(Multiple Choice)

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Question 51

A karate master strikes a board with an initial velocity of 12.0 m/s,decreasing to 3.0 m/s as his hand passes through the board.If the time of contact with the board is 0.002 s,and the mass of the coordinated hand and arm is 1.0 kg,what is the force exerted on the board?

(Multiple Choice)

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Question 52

An astronaut applies a force of 450 N to an asteroid,and it accelerates at 7.0 m/s².What is the asteroid's mass?

(Multiple Choice)

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Question 53

A 16.0-kg mass and a 2.25-kg mass are connected by a light string over a massless,frictionless pulley.If g = 9.8 m/s²,what is the acceleration of the system when released?

(Multiple Choice)

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Question 54

Jamal pulls a 250-N sled up a 29.0° slope at constant speed by a force of 200 N.Near the top of the hill he releases the sled.With what acceleration does the sled go down the hill?

(Multiple Choice)

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Question 55

Five boys are pushing on a snowball,and each is pushing with a force of 10.0.0 N.However,each boy is pushing in a different direction.They are pushing north,northeast,east,southeast,and south.(Each boy is pushing at an angle of 45.0° relative to his neighbor. )What is the magnitude of the total force on the ball?

(Multiple Choice)

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Question 56

What forces are included in a free-body diagram for an object?

(Multiple Choice)

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Question 57

Two blocks of masses 20 kg and 9.0 kg are connected together by a light string and rest on a frictionless level surface.Attached to the 9.0-kg mass is another light string,which a person uses to pull both blocks horizontally.If the two-block system accelerates at 0.80 m/s²,what is the tension in the second string attached to the 9.0-kg mass?

(Multiple Choice)

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Question 58

A block of mass 4.0 kg rests on a horizontal surface where the coefficient of kinetic friction between the two is 0.20.A string attached to the block is pulled horizontally,resulting in a 3.0-m/s² acceleration by the block.Find the tension in the string.(g = 9.80 m/s²)

(Multiple Choice)

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Question 59

Find the tension in an elevator cable if the 1 500-kg elevator is descending with an acceleration of 2.8 m/s²,downward.

(Multiple Choice)

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Question 60

Showing 41 - 60 of 101

Exam 4: Newtons Laws of Motion

A 5 500-N weight is held suspended in equilibrium by two cables.Cable 1 applies a horizontal force to the right of the object and has a tension,T1.Cable 2 applies a force upward and to the left at an angle of 40.0° to the negative x-axis and has a tension,T2.What is the tension,T1?

As I slide a box at constant speed up a frictionless slope,pulling parallel to the slope,the tension in the rope will be:

Two blocks,joined by a string,have masses of 3.0 and 4.0 kg.They rest on a frictionless horizontal surface.A second string,attached only to the 4.0-kg block,has horizontal force = 40 N applied to it.Both blocks accelerate.Find the tension in the string between the blocks.

As I pull a rope connected to a box at constant speed up a frictionless slope,pulling parallel to the slope,the tension in the rope will be:

A 150-kg crate is placed on an adjustable inclined plane.If the crate slides down the incline with an acceleration of 0.70 m/s2 when the incline angle is 20°,then what should the incline angle be for the crate to slide down the plane at constant speed? (g = 9.8 m/s2)

A horizontal force of 675 N is needed to overcome the force of static friction between a level floor and a 300-kg crate.What is the acceleration of the crate if the 675-N force is maintained after the crate begins to move and the coefficient of kinetic friction is 0.15?

A 20.0-kg traffic light hangs midway on a cable between two poles 30.0 meters apart.If the sag in the cable is 0.40 meters,what is the tension in each side of the cable?

A 14-kg block rests on a level frictionless surface and is attached by a light string to a 5.0-kg hanging mass where the string passes over a massless frictionless pulley.If g = 9.8 m/s2,what is the tension in the connecting string?

A 500-N block,on a 30.0° incline,is being held motionless by friction.The coefficient of static friction between the block and the plane is 0.63.The force due to friction is:

A box of mass m is placed on an incline with angle of inclination θ.The box does not slide.The magnitude of the frictional force in this case is:

A karate master strikes a board with an initial velocity of 12.0 m/s,decreasing to 3.0 m/s as his hand passes through the board.If the time of contact with the board is 0.002 s,and the mass of the coordinated hand and arm is 1.0 kg,what is the force exerted on the board?

An astronaut applies a force of 450 N to an asteroid,and it accelerates at 7.0 m/s2.What is the asteroid's mass?

A 16.0-kg mass and a 2.25-kg mass are connected by a light string over a massless,frictionless pulley.If g = 9.8 m/s2,what is the acceleration of the system when released?

Jamal pulls a 250-N sled up a 29.0° slope at constant speed by a force of 200 N.Near the top of the hill he releases the sled.With what acceleration does the sled go down the hill?

​What forces are included in a free-body diagram for an object?

A block of mass 4.0 kg rests on a horizontal surface where the coefficient of kinetic friction between the two is 0.20.A string attached to the block is pulled horizontally,resulting in a 3.0-m/s2 acceleration by the block.Find the tension in the string.(g = 9.80 m/s2)

Find the tension in an elevator cable if the 1 500-kg elevator is descending with an acceleration of 2.8 m/s2,downward.

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A 5 500-N weight is held suspended in equilibrium by two cables.Cable 1 applies a horizontal force to the right of the object and has a tension,T₁.Cable 2 applies a force upward and to the left at an angle of 40.0° to the negative x-axis and has a tension,T₂.What is the tension,T₁?

A 150-kg crate is placed on an adjustable inclined plane.If the crate slides down the incline with an acceleration of 0.70 m/s² when the incline angle is 20°,then what should the incline angle be for the crate to slide down the plane at constant speed? (g = 9.8 m/s²)

A 14-kg block rests on a level frictionless surface and is attached by a light string to a 5.0-kg hanging mass where the string passes over a massless frictionless pulley.If g = 9.8 m/s²,what is the tension in the connecting string?

An astronaut applies a force of 450 N to an asteroid,and it accelerates at 7.0 m/s².What is the asteroid's mass?

A 16.0-kg mass and a 2.25-kg mass are connected by a light string over a massless,frictionless pulley.If g = 9.8 m/s²,what is the acceleration of the system when released?

What forces are included in a free-body diagram for an object?

A block of mass 4.0 kg rests on a horizontal surface where the coefficient of kinetic friction between the two is 0.20.A string attached to the block is pulled horizontally,resulting in a 3.0-m/s² acceleration by the block.Find the tension in the string.(g = 9.80 m/s²)

Find the tension in an elevator cable if the 1 500-kg elevator is descending with an acceleration of 2.8 m/s²,downward.