- Messages
- 1,800
- Reaction score
- 1,800
- Points
- 173
Hey guys, do you have Mechanics notes related to Newton's law of motions? I always get confused in how to construct the equations in the pulley questions. 
-
We need your support!
We are currently struggling to cover the operational costs of Xtremepapers, as a result we might have to shut this website down. Please donate if we have helped you and help make a difference in other students' lives!
Click here to Donate Now (View Announcement)
Mechanics help needed
- Thread starter arlery
- Start date
- Messages
- 1,800
- Reaction score
- 1,800
- Points
- 173
any one??
I dont have the notes but i used to remeber like this.Correct me if im wrong (studied one year back )
Imagine there is a pulley with two balls A and B . When A is moving downwards ,consequently B moves upwards , from this you can conclude that the weight of A is greater than the tension in the string since the weight of the ball is pulling it downwards. Now construct the equation for Ball A as > Weight-Tension=Mass x Acceleration (f-t=ma). Vice versa, the ball B is moving upwards ,here the tension is greater than the weight of the ball, since the tension is pulling it upwards.Now construct the equation for Ball B as >Tension - Weight=Mass x Acceleration. Now solve the both equations simultaneously. You can find the Acceleration followed tension in this way. This is just one common type of pulley question that comes.
Imagine there is a pulley with two balls A and B . When A is moving downwards ,consequently B moves upwards , from this you can conclude that the weight of A is greater than the tension in the string since the weight of the ball is pulling it downwards. Now construct the equation for Ball A as > Weight-Tension=Mass x Acceleration (f-t=ma). Vice versa, the ball B is moving upwards ,here the tension is greater than the weight of the ball, since the tension is pulling it upwards.Now construct the equation for Ball B as >Tension - Weight=Mass x Acceleration. Now solve the both equations simultaneously. You can find the Acceleration followed tension in this way. This is just one common type of pulley question that comes.