Homework Answers
A 15.0 kg box is being pulled across a rough floor at a constant acceleration of 3.00 m/s^2 by means of a rope. The rope...
A 15.0 kg box is being pulled across a rough floor at a constant acceleration of 3.00 m/s^2 by means of a rope. The rope makes an angle of 34.0 degrees above the horizontal. The coefficient of kinetic friction between the floor and the box is u=0.250. Calculate the magnitude of the tension in the rope?
The figure below shows a block with mass m = 5.3 kg pulled up a ramp...
The figure below shows a block with mass m = 5.3 kg pulled up a ramp inclined at an angle of 6 = 28° with a force of magnitude F = 33 N parallel to the ramp. m (a) If there is no friction between the block and the ramp, what is the magnitude of the block's acceleration (in m/s2)? 1.485 Draw a free-body diagram. What forces act on the block? Let the x-axis be parallel to the incline. What...
2. A block of mass 15.0 kg is being pulled up a flat incline of angle...
2. A block of mass 15.0 kg is
being pulled up a flat incline of angle 30.0? and coefficient of
kinetic friction 0.120 by a string. The tension in the string is
120 N, and is directed parallel to the incline, as shown in the
diagram below. (a) What is the value of the force exerted on the
block by the incline? (That is, what is the block�s
apparent weight?) (b) What is the magnitude of the block�s
acceleration?
2....
a 15.5 kg block is pulled by two forces. the first is 11.8 N at a...
a 15.5 kg block is pulled by two forces. the first is 11.8 N at a 53.7 angle and the second is 22.9 N at a -15.8 angle. what is the magnitude of the acceleration?
A 25.5 kg block is being pulled by a force F = 241 N up along...
A 25.5 kg block is being pulled by a force F = 241 N up along a rough incline. The coefficient of kinetic friction between the block and the incline is μk = 0.40. The block is pulled through a distance of 27.0 m. Angle is 33 degrees. (a) Solve for the magnitude of the normal force (in Newtons)? -Calculate the work (in Joules) done by the normal force. Pay attention to the angle in the work formula and the...
A box of mass m = 5.0 kg initially at rest is being pulled along a...
A box of mass m = 5.0 kg initially at rest is being pulled along a smooth horizontal surface by a rope that makes an angle of 30° with the horizontal and exerts a force of 20 N on the box. Determine the – a) acceleration of the box and – b) the normal force.
An elevator with a person in it is being pulled upwards by a massive cable. Identify...
An elevator with a person in it is being pulled upwards by a massive cable. Identify all interaction forces (consistent with Newton's 3rd Law) in the system. Specify the object the force acts on. a label for its magnitude and its direction. Consider your system to consist of the cable, the elevator, the Earth and the person. For example, the Earth pulls down on the elevator with force Melevator9 and the elevator pulls up on the Earth with force Meievatorg?-...
2. The figure shows a 7 kg block being pulled along a frictionless floor by a...
2. The figure shows a 7 kg block being pulled along a frictionless floor by a cord that applies a force of constant magnitude 16 N but with an angle 0 (t) that varies with time. (a) for an angle e, draw a free-body diagram showing the forces applied to the block, and find expressions for the x & y components of the force on the block. (b) When angle 0 = 27°, find the block's acceleration. When angle 0...
Two blocks that are both 7 kg are connected by a string that massless and frictionless....
Two blocks that are both 7 kg are connected by a string that
massless and frictionless. The are both being pulled by a pulley
over the edge of a table.
A. If force is directed to the right and has magnitude 90 N,
find the acceleration of the two blocks.
B. For the same direction of F and magnitude, find the tension
in the string.
C. Now a different force, still horizontal, is applied to block
A, making the tension...
A heavy sled is being pulled by two people as shown in the figure. The coefficient...
A heavy sled is being pulled by two people as shown in the figure. The coefficient of static friction between the sled and the ground is As-0603, and the kinetic friction coefficient is μ< : 0.411. The combined mass of the sled and its load is m-351 kg. The ropes are separated by an angle φ = 25°, and they make an angle θ = 31.1° with the horizontal. Assuming both ropes pull equally hard, what is the minimum rope...
The figure below shows a block with mass m = 5.3 kg pulled up a ramp inclined at an angle of 6 = 28° with a force of magnitude F = 33 N parallel to the ramp. m (a) If there is no friction between the block and the ramp, what is the magnitude of the block's acceleration (in m/s2)? 1.485 Draw a free-body diagram. What forces act on the block? Let the x-axis be parallel to the incline. What...
2. A block of mass 15.0 kg is
being pulled up a flat incline of angle 30.0? and coefficient of
kinetic friction 0.120 by a string. The tension in the string is
120 N, and is directed parallel to the incline, as shown in the
diagram below. (a) What is the value of the force exerted on the
block by the incline? (That is, what is the block�s
apparent weight?) (b) What is the magnitude of the block�s
acceleration?
2....
An elevator with a person in it is being pulled upwards by a massive cable. Identify all interaction forces (consistent with Newton's 3rd Law) in the system. Specify the object the force acts on. a label for its magnitude and its direction. Consider your system to consist of the cable, the elevator, the Earth and the person. For example, the Earth pulls down on the elevator with force Melevator9 and the elevator pulls up on the Earth with force Meievatorg?-...
2. The figure shows a 7 kg block being pulled along a frictionless floor by a cord that applies a force of constant magnitude 16 N but with an angle 0 (t) that varies with time. (a) for an angle e, draw a free-body diagram showing the forces applied to the block, and find expressions for the x & y components of the force on the block. (b) When angle 0 = 27°, find the block's acceleration. When angle 0...
Two blocks that are both 7 kg are connected by a string that
massless and frictionless. The are both being pulled by a pulley
over the edge of a table.
A. If force is directed to the right and has magnitude 90 N,
find the acceleration of the two blocks.
B. For the same direction of F and magnitude, find the tension
in the string.
C. Now a different force, still horizontal, is applied to block
A, making the tension...
A heavy sled is being pulled by two people as shown in the figure. The coefficient of static friction between the sled and the ground is As-0603, and the kinetic friction coefficient is μ< : 0.411. The combined mass of the sled and its load is m-351 kg. The ropes are separated by an angle φ = 25°, and they make an angle θ = 31.1° with the horizontal. Assuming both ropes pull equally hard, what is the minimum rope...
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