Maths, mechanics homework!!
Can someone help please?
A particle A of mass 5kg rests on a rough plane inclined at 30 degrees to the horizontal. A string attached to A lies along a line of greatest slope of the plane and passed over a smooth pulley at the top of the plane. A particle B of mass 6kg hangs vertically from the string 1m above a horizontal plane. The system is released from rest with the string taut. If B takes 2 seconds to reach the horizontal plane, find the coefficient of friction between A and the inclined plane. Find also the total distance that A moves up the plane, assuming A does not reach the pulley ?
THANKYOU FOR ANY HELP!!
A particle A of mass 5kg rests on a rough plane inclined at 30 degrees to the horizontal. A string attached to A lies along a line of greatest slope of the plane and passed over a smooth pulley at the top of the plane. A particle B of mass 6kg hangs vertically from the string 1m above a horizontal plane. The system is released from rest with the string taut. If B takes 2 seconds to reach the horizontal plane, find the coefficient of friction between A and the inclined plane. Find also the total distance that A moves up the plane, assuming A does not reach the pulley ?
THANKYOU FOR ANY HELP!!
Original post by Sykesy1
Can someone help please?
A particle A of mass 5kg rests on a rough plane inclined at 30 degrees to the horizontal. A string attached to A lies along a line of greatest slope of the plane and passed over a smooth pulley at the top of the plane. A particle B of mass 6kg hangs vertically from the string 1m above a horizontal plane. The system is released from rest with the string taut. If B takes 2 seconds to reach the horizontal plane, find the coefficient of friction between A and the inclined plane. Find also the total distance that A moves up the plane, assuming A does not reach the pulley ?
THANKYOU FOR ANY HELP!!
A particle A of mass 5kg rests on a rough plane inclined at 30 degrees to the horizontal. A string attached to A lies along a line of greatest slope of the plane and passed over a smooth pulley at the top of the plane. A particle B of mass 6kg hangs vertically from the string 1m above a horizontal plane. The system is released from rest with the string taut. If B takes 2 seconds to reach the horizontal plane, find the coefficient of friction between A and the inclined plane. Find also the total distance that A moves up the plane, assuming A does not reach the pulley ?
THANKYOU FOR ANY HELP!!
Start by drawing a diagram and then resolve vertically using F=ma at B.
Original post by Sykesy1
Okay but how do you find the coefficient and get rid of the tensions
What can you find from resolving vertically using F=ma at B?
Original post by Sykesy1
6g-t=6a
You can work out what the tension is from here. Use the fact that the particle B travelled 1m in 2 seconds to calculate the acceleration.
Original post by Sykesy1
Okay do I use a suvat equation to find the acceleration then?
Yes.
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