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A ball of weight Q and radius r is attached by a string AD to a vertical wall AB, as shownin Fig. Determine the tensile force S in the string and the reaction Rb against the wall atB if Q = 90 N, r = 75 mm, AB = 100 mm. Neglect friction at wall.
question1a potters wheel having a radius 0.53 m and a moment of inertia 14 kgbullm2 is rotating freely at 53 revmin.
On the Moon, the average surface temperature is 127 ?C during the day and -183 ?C during the night. What is the corresponding change on the Fahrenheit scale
A spring with a constant 150 N/m is attached to a block with a mass 1.5 kg. What is the maximum displacement the mass will achieve
In 2.0 minutes, a ski lift raises four skiers at a constant speed to a height of 140 m. What is the average power provided by the tension in the cable pulling the lift
A basketball of mass 0.611 kg is droppedfrom rest from a height of 1.17 m. It rebounds to a height of 0.638m. (a) How much mechanical energy was lost duringthe collision with the floor? (b) A basket ballplayer dribbles the ball from a height of 1...
A closely wound coil has a radius of 6.30 cm and carries a current of 1.70 A. How many turns must it have if, at a point on the coil axis 6.30 cm from the center of the coil
q. a 2500-kg sport utility vehicle travelling at 92 kmh can be stopped in 0.25 s if it hits a concrete wall. assume a
dan climbs a flight stairs in 1.7 min. if he weighs 480 n and the stairs is 10 m from the ground how much power will he
A wire with a current of 2.8 Amp is at an angle of 38.8 degree relative to a magnetic field of 0.88 T. Calculate the force exerted on a 1.91 meter length of the wire
The triangular loop of wire in the drawing carries a current of I= 6.91 A. A uniform magnetic field is directed parallel to the side AB of the triangle and has a magnitude of 2.77 T.
Speedboat A negotiates a curve whose radius is 118 m. Speedboat B negotiates a curve whose radius is 270 m. Each boat experiences the equivalent centripetal acceleration. What is the ratio vA/vB of the speeds of boats.
a a wire 1 m long is perpendicular to a magnetic field of 0.01 t. what is the force on the wire when it carries a
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