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10 Nov 2019
Two blocks are connected by a massless string over a massless andfrictionless pulley. Mass 1 (5 kg) is on a plane inclined at 35degrees. Mass 2 (11 kg) is hanging from the pulley. The coefficientof static friction is 0.25 and the coefficient of kinetic frictionis 0.15 on the surface.
a) The system is released from rest. Do the masses start to slide?(Prove your answer). If not, how hard would you have to push to getthem started?
b) Draw the freebody force diagrams for the masses once they startsliding.
c) From these diagrams, use Newtonâs 2nd Law to obtain theequations you will need to solve for acceleration andtension.
d) What is the acceleration of the blocks?
e) What is the tension in the string?
Two blocks are connected by a massless string over a massless andfrictionless pulley. Mass 1 (5 kg) is on a plane inclined at 35degrees. Mass 2 (11 kg) is hanging from the pulley. The coefficientof static friction is 0.25 and the coefficient of kinetic frictionis 0.15 on the surface.
a) The system is released from rest. Do the masses start to slide?(Prove your answer). If not, how hard would you have to push to getthem started?
b) Draw the freebody force diagrams for the masses once they startsliding.
c) From these diagrams, use Newtonâs 2nd Law to obtain theequations you will need to solve for acceleration andtension.
d) What is the acceleration of the blocks?
e) What is the tension in the string?
Tod ThielLv2
24 Jul 2019
