Metal Gear Raxis
New member
I'm having huge trouble with three of them. Please help!
1) A crate is placed on an inclined board as shown in the figure below. One end of the board is hinged so that the angle θ is adjustable. If the coefficient of static friction between the crate and the board is μS = 0.23, what is the value of θ at which the crate just begins to slip?
the adjustable section is on the right side. The whole thing forms a right triangle, the adjustable section is the connecting point between the hypoteneus and adjacent, and the left point, where the crate starts, is the opposite.
2) For the system in the figure below (where m1 = 42 kg, and the coefficient of static friction between m1 and the table μS = 0.41), how large can m2 be made without the system starting into motion?
The picture has one crate on a platform, with another hanging off by a pulley and string and hanging over mid air.
3) Two crates are connected by a massless rope that passes over a pulley as shown in the figure below. If the crates have mass 30 kg and 81 kg, find their acceleration. If the system begins at rest, with the more massive crate a distance 12 m above the floor, how long does it take for the more massive crate to reach the floor? Assume the pulley is massless and frictionless.
Could somebody please walk me through each of these?
1) A crate is placed on an inclined board as shown in the figure below. One end of the board is hinged so that the angle θ is adjustable. If the coefficient of static friction between the crate and the board is μS = 0.23, what is the value of θ at which the crate just begins to slip?
the adjustable section is on the right side. The whole thing forms a right triangle, the adjustable section is the connecting point between the hypoteneus and adjacent, and the left point, where the crate starts, is the opposite.
2) For the system in the figure below (where m1 = 42 kg, and the coefficient of static friction between m1 and the table μS = 0.41), how large can m2 be made without the system starting into motion?
The picture has one crate on a platform, with another hanging off by a pulley and string and hanging over mid air.
3) Two crates are connected by a massless rope that passes over a pulley as shown in the figure below. If the crates have mass 30 kg and 81 kg, find their acceleration. If the system begins at rest, with the more massive crate a distance 12 m above the floor, how long does it take for the more massive crate to reach the floor? Assume the pulley is massless and frictionless.
Could somebody please walk me through each of these?