3. You are standing in a moving bus, facing forward, when you suddenly slide forward as...
3. You are standing in a moving bus, facing forward, when you suddenly slide forward as the bus comes to an immediate stop. What force caused you to slide forward?
a) the force due to friction between you and the floor of the bus
b) gravity
c) There is not a force causing you to slide forward - it is due to inertia.
d) the normal force due to your contact with the floor of the bus
4. A block of mass m sits at rest on a rough inclined ramp that makes an angle θ with the horizontal. What must be true about force of static friction f on the block?
a) f > mg sin θ
b) f > mg
c) f > mg cos θ
d) f = mg sin θ
e) f = mg cos θ
Homework Answers
Answers :
Question (3) Answer : (c) There is not a force causing you to slide forward - it is due to inertia.
Question (4) Answer : (d) f = mg sin θ
Add Answer to:
3. You are standing in a moving bus, facing forward, when you
suddenly slide forward as...
You are standing in a moving bus, facing forward, when you suddenly slide forward as the...
You are standing in a moving bus, facing forward, when you suddenly slide forward as the bus comes to an immediate stop. What force caused you to slide forward? the force due to friction between you and the floor of the bus the normal force due to your contact with the floor of the bus gravity There is not a force causing you to slide forward.
Help with explanation 12. A block of mass m sits at rest on a rough inclined...
Help with explanation
12. A block of mass m sits at rest on a rough inclined ramp that makes an anigle 0 wIl horizontal. W A) F> mg B)F>rng cos θ c)F > mg sin θ hat must be true about normal force F on the block due to the ramp?
2. 2/10 points Previous Answers SerPSE10 5.AE.011. My Notes Experimental Determination of H's and The following...
2. 2/10 points Previous Answers SerPSE10 5.AE.011. My Notes Experimental Determination of H's and The following is a simple method of measuring coefficients of friction. Suppose a block is placed on a rough surface inclined relative to the horizontal as shown in the figure. The incline angle is increased until the block starts to move. Show that you can obtain H by measuring the critical angle e, at which this slipping just occurs. The external forces exerted on a block...
Figure 4: Top view of force table. (3) Figure 5 is an inclined-plane system that will...
Figure 4: Top view of force table. (3) Figure 5 is an inclined-plane system that will be stud- ied in the first part of this experiment. As labelled in the figure, the x (y) direction is parallel (perpendicular) to the inclined plane, and the gravitational acceleration is downward. If the hanging mass m is too small, the block mass M on the inclined plane slides down. When the hanging mass is gradually increased to a lower-bound value mi such that...
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...
IlI. A SMOOTH ACCELERATING PLANE An smooth plane is inclined from the horizantal at angle of...
IlI. A SMOOTH ACCELERATING PLANE An smooth plane is inclined from the horizantal at angle of 0 as shown. (Assume for now that 0- 70 degrees.) A mass m is placed at the top of the inclined plane and allowed to slide downwards (friction is negligible). At some point during the mass's trip. however, the plane begins to accelerate to the right at a rate of a, causing the mass to stop sliding on the plane. How/why does it stop...
3. A very thin circular hoop of mass m and radius r is made to roll,...
3. A very thin circular hoop of mass m and radius r is made to roll, without slipping, down a ramp with an angle of inclination (with respect to the horizontal), as shown in the figure below. See Figure 3. Note: The moment of inertia of the thin circular hoop is given by: I houp = mra Consider a system consisting of a ladder with a painter climbing said ladder. The ladder has a length 1 = 5,00 meters and...
Plz help me solve all those problem, and explain a little! thank you so much You...
Plz
help me solve all those problem, and explain a little! thank you so
much
You are in an elevator that is moving upwards with its speed increasing at a rate of 3 m/s2. Which diagram best represents the forces acting on you? BFN (A) EN M9 of Diagram C Diagram B Diagram D Diagram A A box of mass [M] kg is held stationary against a vertical wall by a force [FO] N at the angle (theta) degrees as...
don a sled starts from rest at the top of a 15.0° slope. If the trip...
don a sled starts from rest at the top of a 15.0° slope. If the trip to the bottom takes 2 s, how long i A) 586 mB) 293 m C) 1130 m D) 147 m 2) Two children fighting over a toy pull on the toy in different directions. One child pulls to the north with a force of 5.3 N, and the other child pulls to the east with a force of 6.3 N. What is the magnitude...
please write neatly Practice drawing FBDs You will first identify all the forces using the approach...
please write neatly
Practice drawing FBDs You will first identify all the forces using the approach above (Foblect 1-object 2) and then switch to mg, N, 1, e H. Each description below indicates the object of interest via bold italics. Draw a picture of the situation, in which you identify contact points. Then, following the same steps outlined above, draw a FBD on the object of interest. All forces should be written as above (Fobiect 1-+oblect 2). Make sure the...
You are standing in a moving bus, facing forward, when you suddenly slide forward as the bus comes to an immediate stop. What force caused you to slide forward? the force due to friction between you and the floor of the bus the normal force due to your contact with the floor of the bus gravity There is not a force causing you to slide forward.
Help with explanation
12. A block of mass m sits at rest on a rough inclined ramp that makes an anigle 0 wIl horizontal. W A) F> mg B)F>rng cos θ c)F > mg sin θ hat must be true about normal force F on the block due to the ramp?
2. 2/10 points Previous Answers SerPSE10 5.AE.011. My Notes Experimental Determination of H's and The following is a simple method of measuring coefficients of friction. Suppose a block is placed on a rough surface inclined relative to the horizontal as shown in the figure. The incline angle is increased until the block starts to move. Show that you can obtain H by measuring the critical angle e, at which this slipping just occurs. The external forces exerted on a block...
Figure 4: Top view of force table. (3) Figure 5 is an inclined-plane system that will be stud- ied in the first part of this experiment. As labelled in the figure, the x (y) direction is parallel (perpendicular) to the inclined plane, and the gravitational acceleration is downward. If the hanging mass m is too small, the block mass M on the inclined plane slides down. When the hanging mass is gradually increased to a lower-bound value mi such that...
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...
IlI. A SMOOTH ACCELERATING PLANE An smooth plane is inclined from the horizantal at angle of 0 as shown. (Assume for now that 0- 70 degrees.) A mass m is placed at the top of the inclined plane and allowed to slide downwards (friction is negligible). At some point during the mass's trip. however, the plane begins to accelerate to the right at a rate of a, causing the mass to stop sliding on the plane. How/why does it stop...
3. A very thin circular hoop of mass m and radius r is made to roll, without slipping, down a ramp with an angle of inclination (with respect to the horizontal), as shown in the figure below. See Figure 3. Note: The moment of inertia of the thin circular hoop is given by: I houp = mra Consider a system consisting of a ladder with a painter climbing said ladder. The ladder has a length 1 = 5,00 meters and...
Plz
help me solve all those problem, and explain a little! thank you so
much
You are in an elevator that is moving upwards with its speed increasing at a rate of 3 m/s2. Which diagram best represents the forces acting on you? BFN (A) EN M9 of Diagram C Diagram B Diagram D Diagram A A box of mass [M] kg is held stationary against a vertical wall by a force [FO] N at the angle (theta) degrees as...
don a sled starts from rest at the top of a 15.0° slope. If the trip to the bottom takes 2 s, how long i A) 586 mB) 293 m C) 1130 m D) 147 m 2) Two children fighting over a toy pull on the toy in different directions. One child pulls to the north with a force of 5.3 N, and the other child pulls to the east with a force of 6.3 N. What is the magnitude...
please write neatly
Practice drawing FBDs You will first identify all the forces using the approach above (Foblect 1-object 2) and then switch to mg, N, 1, e H. Each description below indicates the object of interest via bold italics. Draw a picture of the situation, in which you identify contact points. Then, following the same steps outlined above, draw a FBD on the object of interest. All forces should be written as above (Fobiect 1-+oblect 2). Make sure the...
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