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A horizontal beam 4meter long is attached to a vertical wall with a hinge at one end, and a body of weight 500 Newton hangs from the outer end. The beam is supported by a man from its outer end to the wall directly above the beam.
A) If the tension in the wire is not to exceed 100 N, find what is the minimum height above the beam at which it may be fastened to the wall?
B) If the wire were now to be fastened at distance of 0.5meter below this point in Part A, with the beam remaining horizontal, determine what would the new tension in the wire be? Neglect the weight of the beam.
A string 1.50 m long will break if the tension in it exceeds 2X10^2N. How fast (in m/s) can a rock of mass 1.50 kg be whirled in a circular horizontal path if the string is not to break? Assume the rock moves on a smooth horizontal surface (No fri..
A car traveling 50.7 km/h is 21.9 m from a barrier when the driver slams on the brakes. The car hits the barrier 2.03 slater. (a) What is the car's constantdeceleration magnitude before impact? (b) How fast is the cartraveling at impact?
A very bouncy ball is dropped from a height of 2.37 m to an asphalt playground surface and the height of its 5th bounce is measured to be 1.69 m. Find the coefficient of restitution of the ball for a collision with asphalt.
the image behind a convex mirror radius of curvature 97.0 cm is located 36.0 cm from the mirror.a where is the object
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In determining the specific heat of a new metal alloy, 150g ofthe substance is heated to 400C and then placed in a 200g aluminiumcalorimeter containing 400g of water at 10C. If the finaltemperature of the mixture is 30.5C, what is the specific hea..
an inferometer consists of 50 parabolic antennas placed 14 m apart. it operates at a wavelength of 21cm. compute the
Consider an object on an incline where friction is present. The angle between the incline and the horizontal is ?, Find an expression for the acceleration of this object. Treat down the incline as the positive direction
question a 78.3 kg weight-watcher wishes to climb a mountain to work off the equivalent of a large piece of chocolate
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