A cord is used to vertically lower an initially stationary block of mass M = 7.6...
A cord is used to vertically lower an initially stationary block of mass M = 7.6 kg at a constant downward acceleration of g/5. When the block has fallen a distance d = 4.2 m, find (a) the work done by the cord's force on the block, (b) the work done by the gravitational force on the block, (c) the kinetic energy of the block, and (d) the speed of the block. (Note : Take the downward direction positive).
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A cord is used to vertically lower an initially stationary block
of mass M = 7.6...
A cord is used to vertically lower an initially stationary block of mass M = 10...
A cord is used to vertically lower an initially stationary block of mass M = 10 kg at a constant downward acceleration of g/6. When the block has fallen a distance d = 5.5 m, find the work done by the cord's force on the block.
A small block with mass m is attached to a cord passing through a hole in...
A small block with mass m is attached to a cord passing through
a hole in a frictionless, horizontal surface. The block is
initially revolving at a distance r from the hole with a speed vr.
as shown. (a) By what force F, applied by the hand is the block
held rotating? The cord is then pulled additionally from below,
shortening the radius of the circle in which the block revolves to
At this new distance, (b) what will the...
magnitude 7. An initially stationary block of mass m is on a floor. A force of...
magnitude 7. An initially stationary block of mass m is on a floor. A force of acceleration due to gravity) is then applied at an angle of θ-20° to the oseontal, What is the magnitude of the acceleration of the block across the floor if p, 0.620 and p 0530 A) Om/s B) 005 m/s C) 2.17 m/s D) 0.20 m/s' E) 20 m/s 28. The same heavy wooden block is dragged by a force F along a rough steel...
An initially stationary 3.7 kg object accelerates horizontally and uniformly to a speed of 7.6 m/s...
An initially stationary 3.7 kg object accelerates horizontally and uniformly to a speed of 7.6 m/s in 4.4 s. (a) In that 4.4 s interval, how much work is done on the object by the force accelerating it? What is the instantaneous power due to that force (b) at the end of the interval and (c) at the end of the first half of the interval? (a) Number (b) Number (c) Number Units Units Units
A massless vertical rope is used to lower a block of mass 18 kg at constant...
A massless vertical rope is used to lower a block of mass 18 kg at constant acceleration 1.1 m/s2 downward. Find the work done by the tension in the rope, in J, after the block is lowered a distance of 54.5 m.
Consider the block arrangement for the following situations: (a) Block moving upward at constant speed (b) Block moving...
Consider the block arrangement for the following situations: (a)
Block moving upward at constant speed (b) Block moving downward at
constant speed (c) Block moving upward, speed decreasing (d) Block
moving upward, speed increasing (e) Block stationary
it was like that
i dont understand the question. help.
Example 5.2.1 Sample Problem Block accelerating vertically This first figure shows a vertically moving block on the end of a cord. Example 5.2.1 Figure 1 This second figure gives the vertical velocity component...
The figure below shows an initially stationary block of mass m on a floor
The figure below shows an initially stationary block of mass m on a floor. A force of magnitude F = 0.550mg is then applied at upward angle θ = 24°. (a) What is the magnitude of the acceleration of the block across the floor if the friction coefficients are μs = 0.610 and μk = 0.505? (b) What is the magnitude of the acceleration of the block across the floor if the friction coefficients are μs = 0.395 and μk...
13. A 15-kg block is initially moving with a velocity of 4.2 m/s on a frictionless...
13. A 15-kg block is initially moving with a velocity of 4.2 m/s on a frictionless surface in the positive x direction. A force is then applied to the box: F = (2.5 - x2){ N. The position of the block is x = 0 when the force is initially applied. With the continued application of this force, what is the kinetic energy of the block at x = 5.0 m?
How to solve from part F to L 5.12 A 5 kg block is placed on...
How to solve from part F to L
5.12 A 5 kg block is placed on a 10 m long incline which is at an angle of 30° to the horizontal as shown in Figure 5.9. The block is initially stationary and slides down the whole length of the incline. block o 10 m 30° Figure 5.9 If the block slides along the incline with- out friction: (a) What is the component of the grav- itational force in direction of...
7. A block of ice of mass m = 12 kg slides dom a frictionlons ramp...
7. A block of ice of mass m = 12 kg slides dom a frictionlons ramp at an angle 8 = 50° while an ice worker pulls on the block (via a rope) with & constant force that has a magnitude F 50N and is directed up the ramp. While this is happening the block slides down the incline through & distanced=0.50 m. Givens: m = 12 kg, F, -50N, d =0.50m, 8 = 50 g 9.8m/s? (a) Draw a...
A small block with mass m is attached to a cord passing through
a hole in a frictionless, horizontal surface. The block is
initially revolving at a distance r from the hole with a speed vr.
as shown. (a) By what force F, applied by the hand is the block
held rotating? The cord is then pulled additionally from below,
shortening the radius of the circle in which the block revolves to
At this new distance, (b) what will the...
magnitude 7. An initially stationary block of mass m is on a floor. A force of acceleration due to gravity) is then applied at an angle of θ-20° to the oseontal, What is the magnitude of the acceleration of the block across the floor if p, 0.620 and p 0530 A) Om/s B) 005 m/s C) 2.17 m/s D) 0.20 m/s' E) 20 m/s 28. The same heavy wooden block is dragged by a force F along a rough steel...
An initially stationary 3.7 kg object accelerates horizontally and uniformly to a speed of 7.6 m/s in 4.4 s. (a) In that 4.4 s interval, how much work is done on the object by the force accelerating it? What is the instantaneous power due to that force (b) at the end of the interval and (c) at the end of the first half of the interval? (a) Number (b) Number (c) Number Units Units Units
Consider the block arrangement for the following situations: (a)
Block moving upward at constant speed (b) Block moving downward at
constant speed (c) Block moving upward, speed decreasing (d) Block
moving upward, speed increasing (e) Block stationary
it was like that
i dont understand the question. help.
Example 5.2.1 Sample Problem Block accelerating vertically This first figure shows a vertically moving block on the end of a cord. Example 5.2.1 Figure 1 This second figure gives the vertical velocity component...
13. A 15-kg block is initially moving with a velocity of 4.2 m/s on a frictionless surface in the positive x direction. A force is then applied to the box: F = (2.5 - x2){ N. The position of the block is x = 0 when the force is initially applied. With the continued application of this force, what is the kinetic energy of the block at x = 5.0 m?
How to solve from part F to L
5.12 A 5 kg block is placed on a 10 m long incline which is at an angle of 30° to the horizontal as shown in Figure 5.9. The block is initially stationary and slides down the whole length of the incline. block o 10 m 30° Figure 5.9 If the block slides along the incline with- out friction: (a) What is the component of the grav- itational force in direction of...
7. A block of ice of mass m = 12 kg slides dom a frictionlons ramp at an angle 8 = 50° while an ice worker pulls on the block (via a rope) with & constant force that has a magnitude F 50N and is directed up the ramp. While this is happening the block slides down the incline through & distanced=0.50 m. Givens: m = 12 kg, F, -50N, d =0.50m, 8 = 50 g 9.8m/s? (a) Draw a...
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