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The bridge over an irrigation channel is shown in the figure below. Th ebridge can be considered as a uniform concrete beam of length 30m and mass 20 tonnes. A heavily loaded small truck of mass 6 tonnes is pictured crossing the bridge.
https://d2vlcm61l7u1fs.cloudfront.net/media%2F395%2F39516c3a-d0c0-423b-8736-b160fe21fb6e%2FphpQYb6Sj.png
Calculate the magnitude of each of the normal contact forces N1 and N1 at each end of the bridge when the centre of mass of the truck is 10 m from one end.
A 25.0-V potential source (a battery) is connected across the plates of a 6.66-µF air-filled parallel-plate capacitor having plates that are 1.22 mm apart. What energy density does it produce between the plates
Two small spheres each with mass m = 5 grams and charge q, are suspended from a point by threads of length L = 0.30m. What is the charge q on each sphere if the threads make an angle theta = 20 degrees with the vertical
Find the total binding energy for Thorium, 228Th (atomic mass = 228.028715 u)
To work off a large pizza that you ate on Friday night, Saturday morning you climb a 120 m hill. find your increase in gravitational potential energy
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a batter hits the ball along the 1st baseline with an initial velocity of 58.0 mph an angle of 61 degrees with respect
What is relative velocity
A disk of mass m= 5^kg and radius r=0.5 m rolls to the right under the influence of force P= 40N. What is the minimum static coefficient of friction for the disk not to slip?
a branch is wedged under a rock and rests on a small object. the small object is 1.5 m from the large rock and the branch is 11.0 m long. what force must be exerted on the smaller rock
A sledge loaded with bricks has a total mass of 18.1 kg and is pulled at constant speed by a rope inclined at 20.8° above the horizontal. What is the mechanical energy lost due to friction
A laborer pushes a wheelbarrow weighing 200 N at 25.0° above the horizontal. If he pushes it a distance of 25.0 m, How much work is done
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