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Equilibrium Net force must equal zero Two connected masses on a plane

Two masses are at rest on a plane inclined at angle s=35° above horizontal. A cord from mass A=4 kg, passes over a frictionless pulley at the top of the plane to unknown mass B. The coefficient of friction is f= .25. See attachment for picture showing blocks and plane. a. Find the maximum mass of B for the masses to remain i

True and false questions regarding buoyancy and density.

Five solid objects made of different materials are placed in a tub of water. The objects are cubes made of wood, ice, aluminum, steel and gold. All of the objects have the SAME mass. The objects are released and allowed to reach some equilibrium position. Note that some of the objects will float, while others will sink. Whic

About a problem relating to rigid body in equilibrium

The asking problem: The uniform rod AB lies in a vertical plane. Its ends are connected to rollers which rest against frictionless surfaces. Determine the relation between the angles teta and alpha when the rod is in equilibrium. Note: This is a 2D problem and not a 3D. It was taken from the «Statics of Rigid Bodies in Two Di

Blocks and ropes

The eight figures show various situations where blocks of different weights are attached by ropes to rigidly fixed objects or to other blocks, which are attached to fixed objects. The situations differ in a number of ways, as the figures show, but all situations represent static equilibrium (i.e. nothing is moving). The weights

Rotational Equilibrium and Rotational Dynamics

The sailor in Figure P8.10 weighs 750N. The force F1 exerted by the wind on the sail is horizontal and acts through point B. The weight of the boat is 1250N and acts through point O, which is 0.8m from the point A along the line OA. The force F2 exerted by the water acts through point A. Determine the net force exerted by t