Homework Answers
Blocks/Force question
A block of mass m1 on a rough, horizontalsurface is connected to a ball of mass m2 by alightweight cord over a lightweight,frictionless pulley, as shownin Figure 5.21a. A force of magnitude F at an angle ofθ with the horizontal is applied to the block asshown. Thecoefficient of kinetic friction between the block andthe surface is µk.Figure 5.21aThe external force F applied as shown can causethe block to accelerate to the right.Consider the system described in the example withm1 =...
In the system shown in Figure P5.31, a horizontal force F acts on the 9.50 kg...
In the system shown in Figure P5.31, a horizontal force F acts on the 9.50 kg object (). The horizontal surface is frictionless. Figure P531 (a) For what values of x does the 4.50 kg ohject (m2) accelerate upward? (b) For what values of Fy is the tension in the cord zero?
The figure below shows an object of mass m1 = 1.0 kg on an inclined surface....
The figure below shows an
object of mass m1 = 1.0 kg on an inclined surface. The angle of the
inclined surface is θ = 30° with the horizontal. The object m1 is
connected to a second object of mass m2 = 2.5 kg on a horizontal
surface below an overhang that is formed by the inclined surface.
Further, an external force of magnitude Fext = 10 N is exerted on
the object with mass m1. We observe both objects...
Identifying and Drawing Force Vectors (No Calculator) FN Surface Force perpendicular to Eill in the table...
Identifying and Drawing Force Vectors (No Calculator) FN Surface Force perpendicular to Eill in the table and draw a FBD for each of the following casesTe the surface. object is in BOLD letter Fr- Friction (Surface force parallel to the surface; opposes motion). We will only consider siding friction FA- Applied force. = Force towards the center of Q1. The surface is rough and the block speeds up. Q2. The crate is held by the rope on a smooth surface...
Question 9 16 pts Two crates, m1 = 20 kg and m2 - 8 kg are...
Question 9 16 pts Two crates, m1 = 20 kg and m2 - 8 kg are in contact with each other on a horizontal, frictionless surface as shown in the figure. A pushing force, P, of 80 N acts on my, at an angle of 20° below the horizontal, but both crates accelerate together, along the ground. a) Draw a free body diagram for each crate. Clearly indicate which forces, if any, are Newton's 3rd law pair forces. b) Find...
Three identical 6.0-kg cubes are placed on a horizontal frictionless surface in contact with one another....
Three identical 6.0-kg cubes are placed on a horizontal frictionless surface in contact with one another. The cubes are lined up from left to right and a force is applied to the left side of the left cube causing all three cubes to accelerate to the right at 3.0 m/s2. What is the magnitude of the force exerted on the right cube by the middle cube in this case? a. 18 N b. none of the above c. 12 N...
A block is pulled along a rough horizontal surface by force of magnitude 100 Newtons, at...
A block is pulled along a rough horizontal surface by force of
magnitude 100 Newtons, at an angle of 30 degrees as shown. The
block has a mass M=20.0 kg, and the coefficient of kinetic friction
between the block and the surface is 0.50.
a)The horizontal component of the tension, T, is
b)The normal force exerted upward by the floor on the block has
a magnitude of
c)If the block moves 10.0 m to the right, the work done by...
An overnight rainstorm has caused a major roadblock. Three massive rocks of mass m1=598kg, m2=796kg and...
An overnight rainstorm has caused a major roadblock. Three
massive rocks of mass m1=598kg, m2=796kg and m3=311kg have blocked
a busy road. The city calls a local contractor to use a bulldozer
to clear the road. The bulldozer applies a constant force to m1 to
slide the rocks off the road. Assuming the road is a flat
frictionless surface and the rocks are all in contact, what force,
FA must be applied to m1 to slowly accelerate the group of...
Phy
A contestant in a winter games event pushes a 38.0-kg rock across a frozen lake with a force of 25 N at 24° below the horizontal as shown in Figure (a) below, and itmoves with an acceleration of 0.60 m/s2 to the right.(a) What is the normal force exerted by the lake surface on the rock?N(b) Instead of pushing on the rock, the contestant now pulls on it with a rope over his shoulder at the same angle above the...
Problem 3 (20 points) In the following figure, a horizontal force F is applied to a...
Problem 3 (20 points) In the following figure, a horizontal force F is applied to a large block of mass M with a massless pulley attached to it. While the block M is moving to the right, the other two blocks mi and m2 remain stationary problem relative to M. All surfaces are frictionless for this (a) Draw separate free body diagrams for M(including the massless pulley), mi, and m2 respectively. On the free body diagrams, please only draw and...
A block of mass m1 on a rough, horizontalsurface is connected to a ball of mass m2 by alightweight cord over a lightweight,frictionless pulley, as shownin Figure 5.21a. A force of magnitude F at an angle ofθ with the horizontal is applied to the block asshown. Thecoefficient of kinetic friction between the block andthe surface is µk.Figure 5.21aThe external force F applied as shown can causethe block to accelerate to the right.Consider the system described in the example withm1 =...
In the system shown in Figure P5.31, a horizontal force F acts on the 9.50 kg object (). The horizontal surface is frictionless. Figure P531 (a) For what values of x does the 4.50 kg ohject (m2) accelerate upward? (b) For what values of Fy is the tension in the cord zero?
The figure below shows an
object of mass m1 = 1.0 kg on an inclined surface. The angle of the
inclined surface is θ = 30° with the horizontal. The object m1 is
connected to a second object of mass m2 = 2.5 kg on a horizontal
surface below an overhang that is formed by the inclined surface.
Further, an external force of magnitude Fext = 10 N is exerted on
the object with mass m1. We observe both objects...
Identifying and Drawing Force Vectors (No Calculator) FN Surface Force perpendicular to Eill in the table and draw a FBD for each of the following casesTe the surface. object is in BOLD letter Fr- Friction (Surface force parallel to the surface; opposes motion). We will only consider siding friction FA- Applied force. = Force towards the center of Q1. The surface is rough and the block speeds up. Q2. The crate is held by the rope on a smooth surface...
Question 9 16 pts Two crates, m1 = 20 kg and m2 - 8 kg are in contact with each other on a horizontal, frictionless surface as shown in the figure. A pushing force, P, of 80 N acts on my, at an angle of 20° below the horizontal, but both crates accelerate together, along the ground. a) Draw a free body diagram for each crate. Clearly indicate which forces, if any, are Newton's 3rd law pair forces. b) Find...
A block is pulled along a rough horizontal surface by force of
magnitude 100 Newtons, at an angle of 30 degrees as shown. The
block has a mass M=20.0 kg, and the coefficient of kinetic friction
between the block and the surface is 0.50.
a)The horizontal component of the tension, T, is
b)The normal force exerted upward by the floor on the block has
a magnitude of
c)If the block moves 10.0 m to the right, the work done by...
An overnight rainstorm has caused a major roadblock. Three
massive rocks of mass m1=598kg, m2=796kg and m3=311kg have blocked
a busy road. The city calls a local contractor to use a bulldozer
to clear the road. The bulldozer applies a constant force to m1 to
slide the rocks off the road. Assuming the road is a flat
frictionless surface and the rocks are all in contact, what force,
FA must be applied to m1 to slowly accelerate the group of...
Problem 3 (20 points) In the following figure, a horizontal force F is applied to a large block of mass M with a massless pulley attached to it. While the block M is moving to the right, the other two blocks mi and m2 remain stationary problem relative to M. All surfaces are frictionless for this (a) Draw separate free body diagrams for M(including the massless pulley), mi, and m2 respectively. On the free body diagrams, please only draw and...
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