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A wooden bench 100cm long and a mass of 95g can be balanced from a knife edge when 5g mass is hung 10cm from one end,how far is the knife edge from the center of the edge
inclined 30o with the horizontal. The string passes over a pulley at the upper end of the
plane and another body of mass 3 kg is attached to the other end of the string, this
body hanging vertically. (a) Find the direction and magnitude of the acceleration of
the two bodies and (b) the tension in the string.
what is charges
Two charges are placed on the x- axis 3uc at x=0 & 5uc at x= 45cm. Where must a third charge q be placed if the force it experience is to be zero?
A uniform bar weighing 60 N has a length of 4 m and is supported at its end by strings. A load W=200N is placed at some point on the bar such that it is in equilibrium when the tension in the string at the left end is 80N. (a) Locate the position of W, (b) find the tension in the string at the right end.
In applying the second condition for equilibrium, which axis would be the best and why?
Masses of 50g, 100g, and 200g are placed at the 30 cm, 60 cm, and 80 cm mark, respectively, of a meterstick. If the mass of the meterstick is 300g, locate the center of gravity of the system.
The center of gravity of a non-uniform bamboo pole of length 3m is 1m from its larger end and its weight is 50 Newton. If it is to be supported at its midpoint, what vertical force must be applied at the smaller end of the pole to keep it in a horizontal position?
A uniform ladder weighing 100N leans against a smooth vertical wall with its lower end resting on a rough floor, the ladder making an angle of 70o with the horizontal. Find (a) the force exerted by the wall on the ladder and (b) the force exerted by the floor at the lower end of the ladder
A uniform beam 3m long weighs 100N. Loads of 50 N and 150 N are placed on the beam at points which are ½ m and 2½ m, respectively, from its left end. If the beam is kept in a horizontal position by supports at its two ends, find these reactions.
