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Hanging Pushed Pumpkin Problem
A pumpkin of unknown mass is suspended by a cord attached to the celing and pushed away from vertical. When a 24.0 N force is applied to the pumpkin at an angle of 18.00 to horizontal, the pumpkin will remain in equilibrium when the cord makes an angle of 32.00 with the vertical
(A) What is the tension in the cord when the pumpkin is in equilibrium ?
(B) What is the mass of the pumpkin ?

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PROBLEM 2
Bound Stacked BlocksBlock A weighs 115 N and rest on a rough, horizontal surface and a second block B that weighs 250 N is placed on top of block A. Block B is also attached to the wall by a horizontal cord. A horizontal force is applied to the bottom block to push it out from underneath the block resting on it. To make things simple we assume that the coefficient of friction (both kinetic and static) between all surfaces is .420.
(A) What is the minimum force that one needs to exert on block A so that block A will move out from underneath block B ?
(B) What is the tension in the cord attached to block B if block A is pushed out from underneath block B ? Does the tension depend upon the force pushing A ?
(C) If block A is pushed to the right by a 317 N horizontal force, what is the acceleration of block A ?

Sketch and Process:

Block B remains stationary while block A is accelerated out from underneath block B. There is friction between the two blocks and block A and the surface.




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